Class 9 Mathematics - Introduction to Polynomials - Definition of polynomial Easy Quiz

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बहुपद \(6x^5-2x^3+x-8\) की डिग्री क्या है?

What is the degree of the polynomial \(6x^5-2x^3+x-8\)?

Explanation opens after your attempt
Correct Answer

C. (5)

Step 1

Concept

The highest power is (5). Therefore the degree of the polynomial is (5).

Step 2

Why this answer is correct

The correct answer is C. (5). The highest power is (5). Therefore the degree of the polynomial is (5).

Step 3

Exam Tip

सबसे बड़ी घात (5) है। इसलिए बहुपद की डिग्री (5) है।

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व्यंजक (8x-11) किस प्रकार का बहुपद है?

What type of polynomial is (8x-11)?

Explanation opens after your attempt
Correct Answer

A. रेखीय बहुपदLinear polynomial

Step 1

Concept

Its highest power is (1). A polynomial of degree (1) is called a linear polynomial.

Step 2

Why this answer is correct

The correct answer is A. रेखीय बहुपद / Linear polynomial. Its highest power is (1). A polynomial of degree (1) is called a linear polynomial.

Step 3

Exam Tip

इसकी सबसे बड़ी घात (1) है। डिग्री (1) वाला बहुपद रेखीय बहुपद कहलाता है।

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व्यंजक \(7x^2+4x-9\) किस प्रकार का बहुपद है?

What type of polynomial is \(7x^2+4x-9\)?

Explanation opens after your attempt
Correct Answer

B. द्विघात बहुपदQuadratic polynomial

Step 1

Concept

The highest power is (2). A polynomial of degree (2) is a quadratic polynomial.

Step 2

Why this answer is correct

The correct answer is B. द्विघात बहुपद / Quadratic polynomial. The highest power is (2). A polynomial of degree (2) is a quadratic polynomial.

Step 3

Exam Tip

सबसे बड़ी घात (2) है। डिग्री (2) वाला बहुपद द्विघात बहुपद होता है।

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व्यंजक \(3x^3-5x+2\) किस प्रकार का बहुपद है?

What type of polynomial is \(3x^3-5x+2\)?

Explanation opens after your attempt
Correct Answer

C. त्रिघात बहुपदCubic polynomial

Step 1

Concept

Its highest power is (3). Therefore it is a cubic polynomial.

Step 2

Why this answer is correct

The correct answer is C. त्रिघात बहुपद / Cubic polynomial. Its highest power is (3). Therefore it is a cubic polynomial.

Step 3

Exam Tip

इसमें सबसे बड़ी घात (3) है। इसलिए यह त्रिघात बहुपद है।

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व्यंजक (21) को किस रूप में माना जाएगा?

How will the expression (21) be considered?

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Correct Answer

D. नियतांक बहुपदConstant polynomial

Step 1

Concept

(21) has no variable. Therefore it is a constant polynomial.

Step 2

Why this answer is correct

The correct answer is D. नियतांक बहुपद / Constant polynomial. (21) has no variable. Therefore it is a constant polynomial.

Step 3

Exam Tip

(21) में कोई चर नहीं है। इसलिए यह नियतांक बहुपद है।

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व्यंजक \(x^{\frac{7}{3}}+2\) बहुपद क्यों नहीं है?

Why is \(x^{\frac{7}{3}}+2\) not a polynomial?

Explanation opens after your attempt
Correct Answer

B. क्योंकि चर की घात भिन्न हैBecause the variable has a fractional power

Step 1

Concept

The power \(\frac{7}{3}\) is fractional. In a polynomial, the variable power must be a whole number.

Step 2

Why this answer is correct

The correct answer is B. क्योंकि चर की घात भिन्न है / Because the variable has a fractional power. The power \(\frac{7}{3}\) is fractional. In a polynomial, the variable power must be a whole number.

Step 3

Exam Tip

घात \(\frac{7}{3}\) भिन्न है। बहुपद में चर की घात पूर्ण संख्या होनी चाहिए।

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व्यंजक \(x^{-5}+9x\) बहुपद क्यों नहीं है?

Why is \(x^{-5}+9x\) not a polynomial?

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Correct Answer

A. क्योंकि \(x^{-5}\) की घात ऋणात्मक हैBecause \(x^{-5}\) has a negative power

Step 1

Concept

A variable in a polynomial cannot have a negative power. Here (-5) is a negative power.

Step 2

Why this answer is correct

The correct answer is A. क्योंकि \(x^{-5}\) की घात ऋणात्मक है / Because \(x^{-5}\) has a negative power. A variable in a polynomial cannot have a negative power. Here (-5) is a negative power.

Step 3

Exam Tip

बहुपद में चर की घात ऋणात्मक नहीं हो सकती। यहां (-5) ऋणात्मक घात है।

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बहुपद \(2x^7-3x^4+x^2-6\) की डिग्री क्या है?

What is the degree of \(2x^7-3x^4+x^2-6\)?

Explanation opens after your attempt
Correct Answer

D. (7)

Step 1

Concept

The highest power is (7). Therefore the degree of the polynomial is (7).

Step 2

Why this answer is correct

The correct answer is D. (7). The highest power is (7). Therefore the degree of the polynomial is (7).

Step 3

Exam Tip

सबसे बड़ी घात (7) है। इसलिए बहुपद की डिग्री (7) है।

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बहुपद \(5x^4-3x^2+x-12\) में कितने पद हैं?

How many terms are there in \(5x^4-3x^2+x-12\)?

Explanation opens after your attempt
Correct Answer

C. (4)

Step 1

Concept

The terms are \(5x^4\), \(-3x^2\), (x), and (-12). So there are (4) terms.

Step 2

Why this answer is correct

The correct answer is C. (4). The terms are \(5x^4\), \(-3x^2\), (x), and (-12). So there are (4) terms.

Step 3

Exam Tip

पद \(5x^4\), \(-3x^2\), (x), और (-12) हैं। इसलिए कुल (4) पद हैं।

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बहुपद \(9x^5+x^3-2\) में सबसे बड़ी घात किस पद में है?

In \(9x^5+x^3-2\), which term has the highest power?

Explanation opens after your attempt
Correct Answer

A. \(9x^5\)

Step 1

Concept

The highest power is (5). It is in the term \(9x^5\).

Step 2

Why this answer is correct

The correct answer is A. \(9x^5\). The highest power is (5). It is in the term \(9x^5\).

Step 3

Exam Tip

सबसे बड़ी घात (5) है। यह \(9x^5\) पद में है।

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व्यंजक \(3x^2-\sqrt{7}x+5\) क्या है?

What is the expression \(3x^2-\sqrt{7}x+5\)?

Explanation opens after your attempt
Correct Answer

A. बहुपदPolynomial

Step 1

Concept

\(\sqrt{7}\) is a real coefficient and the power of (x) is (1). Therefore it is a polynomial.

Step 2

Why this answer is correct

The correct answer is A. बहुपद / Polynomial. \(\sqrt{7}\) is a real coefficient and the power of (x) is (1). Therefore it is a polynomial.

Step 3

Exam Tip

\(\sqrt{7}\) वास्तविक गुणांक है और (x) की घात (1) है। इसलिए यह बहुपद है।

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व्यंजक \(2x+\sqrt{x}\) क्या है?

What is the expression \(2x+\sqrt{x}\)?

Explanation opens after your attempt
Correct Answer

C. बहुपद नहींNot a polynomial

Step 1

Concept

\(\sqrt{x}=x^{\frac{1}{2}}\). Due to the fractional power, it is not a polynomial.

Step 2

Why this answer is correct

The correct answer is C. बहुपद नहीं / Not a polynomial. \(\sqrt{x}=x^{\frac{1}{2}}\). Due to the fractional power, it is not a polynomial.

Step 3

Exam Tip

\(\sqrt{x}=x^{\frac{1}{2}}\) होता है। भिन्न घात होने के कारण यह बहुपद नहीं है।

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बहुपद \(14x^2\) में नियतांक पद क्या है?

What is the constant term in the polynomial \(14x^2\)?

Explanation opens after your attempt
Correct Answer

C. (0)

Step 1

Concept

This polynomial has no term without a variable. So the constant term is taken as (0).

Step 2

Why this answer is correct

The correct answer is C. (0). This polynomial has no term without a variable. So the constant term is taken as (0).

Step 3

Exam Tip

इस बहुपद में बिना चर वाला पद नहीं है। इसलिए नियतांक पद (0) माना जाता है।

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बहुपद \(x^6+x^2+1\) में \(x^4\) का गुणांक क्या है?

What is the coefficient of \(x^4\) in \(x^6+x^2+1\)?

Explanation opens after your attempt
Correct Answer

D. (0)

Step 1

Concept

The \(x^4\) term is not present in this polynomial. So the coefficient of \(x^4\) is (0).

Step 2

Why this answer is correct

The correct answer is D. (0). The \(x^4\) term is not present in this polynomial. So the coefficient of \(x^4\) is (0).

Step 3

Exam Tip

इस बहुपद में \(x^4\) पद नहीं है। इसलिए \(x^4\) का गुणांक (0) है।

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क्या \(3x^0+5x\) बहुपद है?

Is \(3x^0+5x\) a polynomial?

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Correct Answer

A. हां, क्योंकि \(x^0=1\) और (x) की घात (1) हैYes, because \(x^0=1\) and the power of (x) is (1)

Step 1

Concept

The power in \(x^0\) is (0), which is valid in a polynomial. Therefore it is a polynomial.

Step 2

Why this answer is correct

The correct answer is A. हां, क्योंकि \(x^0=1\) और (x) की घात (1) है / Yes, because \(x^0=1\) and the power of (x) is (1). The power in \(x^0\) is (0), which is valid in a polynomial. Therefore it is a polynomial.

Step 3

Exam Tip

\(x^0\) की घात (0) है, जो बहुपद में मान्य है। इसलिए यह बहुपद है।

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क्या \(\frac{5x}{7}-3\) (x) में बहुपद है?

Is \(\frac{5x}{7}-3\) a polynomial in (x)?

Explanation opens after your attempt
Correct Answer

B. हां, क्योंकि (x) की घात (1) हैYes, because the power of (x) is (1)

Step 1

Concept

In \(\frac{5x}{7}\), the coefficient is \(\frac{5}{7}\) and the power of (x) is (1). A fractional coefficient is valid in a polynomial.

Step 2

Why this answer is correct

The correct answer is B. हां, क्योंकि (x) की घात (1) है / Yes, because the power of (x) is (1). In \(\frac{5x}{7}\), the coefficient is \(\frac{5}{7}\) and the power of (x) is (1). A fractional coefficient is valid in a polynomial.

Step 3

Exam Tip

\(\frac{5x}{7}\) में गुणांक \(\frac{5}{7}\) है और (x) की घात (1) है। भिन्न गुणांक बहुपद में मान्य है।

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क्या \(-\frac{4}{9}x^4+2x-1\) बहुपद है?

Is \(-\frac{4}{9}x^4+2x-1\) a polynomial?

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Correct Answer

A. हां, क्योंकि गुणांक वास्तविक हो सकते हैं और घातें मान्य हैंYes, because coefficients can be real and powers are valid

Step 1

Concept

Coefficients can be negative or fractional. Here the variable powers are (4), (1), and (0), so it is a polynomial.

Step 2

Why this answer is correct

The correct answer is A. हां, क्योंकि गुणांक वास्तविक हो सकते हैं और घातें मान्य हैं / Yes, because coefficients can be real and powers are valid. Coefficients can be negative or fractional. Here the variable powers are (4), (1), and (0), so it is a polynomial.

Step 3

Exam Tip

गुणांक ऋणात्मक या भिन्न हो सकते हैं। यहां चर की घातें (4), (1), और (0) हैं, इसलिए यह बहुपद है।

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किस व्यंजक में चर की घात \(\frac{5}{6}\) होने से वह बहुपद नहीं है?

Which expression is not a polynomial because the variable has power \(\frac{5}{6}\)?

Explanation opens after your attempt
Correct Answer

B. \(x^{\frac{5}{6}}+4\)

Step 1

Concept

\(\frac{5}{6}\) is a fractional power. In a polynomial, the variable power must be a whole number.

Step 2

Why this answer is correct

The correct answer is B. \(x^{\frac{5}{6}}+4\). \(\frac{5}{6}\) is a fractional power. In a polynomial, the variable power must be a whole number.

Step 3

Exam Tip

\(\frac{5}{6}\) भिन्न घात है। बहुपद में चर की घात पूर्ण संख्या होनी चाहिए।

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बहुपद \(8x^2-9x+16\) की डिग्री क्या है?

What is the degree of \(8x^2-9x+16\)?

Explanation opens after your attempt
Correct Answer

C. (2)

Step 1

Concept

The highest power is (2). Therefore the degree of this polynomial is (2).

Step 2

Why this answer is correct

The correct answer is C. (2). The highest power is (2). Therefore the degree of this polynomial is (2).

Step 3

Exam Tip

सबसे बड़ी घात (2) है। इसलिए इस बहुपद की डिग्री (2) है।

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बहुपद (17x-5) की डिग्री क्या है?

What is the degree of (17x-5)?

Explanation opens after your attempt
Correct Answer

B. (1)

Step 1

Concept

The highest power is (1). Therefore the degree of (17x-5) is (1).

Step 2

Why this answer is correct

The correct answer is B. (1). The highest power is (1). Therefore the degree of (17x-5) is (1).

Step 3

Exam Tip

सबसे बड़ी घात (1) है। इसलिए (17x-5) की डिग्री (1) है।

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अशून्य नियतांक बहुपद (-31) की डिग्री क्या है?

What is the degree of the non-zero constant polynomial (-31)?

Explanation opens after your attempt
Correct Answer

A. (0)

Step 1

Concept

A non-zero constant polynomial has degree (0). (-31) can be considered as \(-31x^0\).

Step 2

Why this answer is correct

The correct answer is A. (0). A non-zero constant polynomial has degree (0). (-31) can be considered as \(-31x^0\).

Step 3

Exam Tip

अशून्य नियतांक बहुपद की डिग्री (0) होती है। (-31) को \(-31x^0\) माना जा सकता है।

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शून्य बहुपद और अशून्य नियतांक बहुपद में सही अंतर क्या है?

What is the correct difference between the zero polynomial and a non-zero constant polynomial?

Explanation opens after your attempt
Correct Answer

C. शून्य बहुपद की डिग्री परिभाषित नहीं होती और अशून्य नियतांक की डिग्री (0) होती हैThe zero polynomial degree is not defined and a non-zero constant has degree (0)

Step 1

Concept

The degree of the zero polynomial is not defined. The degree of a non-zero constant polynomial is (0).

Step 2

Why this answer is correct

The correct answer is C. शून्य बहुपद की डिग्री परिभाषित नहीं होती और अशून्य नियतांक की डिग्री (0) होती है / The zero polynomial degree is not defined and a non-zero constant has degree (0). The degree of the zero polynomial is not defined. The degree of a non-zero constant polynomial is (0).

Step 3

Exam Tip

शून्य बहुपद की डिग्री परिभाषित नहीं होती। अशून्य नियतांक बहुपद की डिग्री (0) होती है।

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बहुपद \(-5x^6+3x^4-x+9\) में अग्रणी पद कौन सा है?

What is the leading term of \(-5x^6+3x^4-x+9\)?

Explanation opens after your attempt
Correct Answer

A. \(-5x^6\)

Step 1

Concept

The term with the highest power is the leading term. Here the highest power is (6).

Step 2

Why this answer is correct

The correct answer is A. \(-5x^6\). The term with the highest power is the leading term. Here the highest power is (6).

Step 3

Exam Tip

सबसे बड़ी घात वाला पद अग्रणी पद होता है। यहां सबसे बड़ी घात (6) है।

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बहुपद \(-11x^4+6x^2-3\) का अग्रणी गुणांक क्या है?

What is the leading coefficient of \(-11x^4+6x^2-3\)?

Explanation opens after your attempt
Correct Answer

A. (-11)

Step 1

Concept

The leading term is \(-11x^4\). Therefore the leading coefficient is (-11).

Step 2

Why this answer is correct

The correct answer is A. (-11). The leading term is \(-11x^4\). Therefore the leading coefficient is (-11).

Step 3

Exam Tip

अग्रणी पद \(-11x^4\) है। इसलिए अग्रणी गुणांक (-11) है।

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व्यंजक \(6x^3+\frac{4}{x}\) बहुपद है या नहीं?

Is \(6x^3+\frac{4}{x}\) a polynomial or not?

Explanation opens after your attempt
Correct Answer

B. नहीं, क्योंकि \(\frac{4}{x}\) में चर हर में हैNo, because in \(\frac{4}{x}\) the variable is in the denominator

Step 1

Concept

In \(\frac{4}{x}\), the power of (x) is (-1). Therefore this expression is not a polynomial.

Step 2

Why this answer is correct

The correct answer is B. नहीं, क्योंकि \(\frac{4}{x}\) में चर हर में है / No, because in \(\frac{4}{x}\) the variable is in the denominator. In \(\frac{4}{x}\), the power of (x) is (-1). Therefore this expression is not a polynomial.

Step 3

Exam Tip

\(\frac{4}{x}\) में (x) की घात (-1) है। इसलिए यह व्यंजक बहुपद नहीं है।

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कौन सा एकपदी है लेकिन (x) में बहुपद नहीं है?

Which is a monomial but not a polynomial in (x)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{7}{x^2}\)

Step 1

Concept

\(\frac{7}{x^2}=7x^{-2}\), so the power is negative. Having one term is not enough to be a polynomial.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{7}{x^2}\). \(\frac{7}{x^2}=7x^{-2}\), so the power is negative. Having one term is not enough to be a polynomial.

Step 3

Exam Tip

\(\frac{7}{x^2}=7x^{-2}\) है, इसलिए घात ऋणात्मक है। एक पद होना बहुपद होने के लिए पर्याप्त नहीं है।

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बहुपद \(4x^3+0x^2+5\) का सरल रूप क्या है?

What is the simplified form of \(4x^3+0x^2+5\)?

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Correct Answer

A. \(4x^3+5\)

Step 1

Concept

\(0x^2=0\), so that term disappears. The simplified form is \(4x^3+5\).

Step 2

Why this answer is correct

The correct answer is A. \(4x^3+5\). \(0x^2=0\), so that term disappears. The simplified form is \(4x^3+5\).

Step 3

Exam Tip

\(0x^2=0\), इसलिए वह पद हट जाता है। सरल रूप \(4x^3+5\) है।

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किस बहुपद में \(x^5\) का गुणांक (0) है?

In which polynomial is the coefficient of \(x^5\) equal to (0)?

Explanation opens after your attempt
Correct Answer

B. \(3x^2+2x-4\)

Step 1

Concept

In \(3x^2+2x-4\), the \(x^5\) term is absent. So the coefficient of \(x^5\) is taken as (0).

Step 2

Why this answer is correct

The correct answer is B. \(3x^2+2x-4\). In \(3x^2+2x-4\), the \(x^5\) term is absent. So the coefficient of \(x^5\) is taken as (0).

Step 3

Exam Tip

\(3x^2+2x-4\) में \(x^5\) पद नहीं है। इसलिए \(x^5\) का गुणांक (0) माना जाता है।

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व्यंजक \(7x^2+x^{-4}+3\) बहुपद क्यों नहीं है?

Why is \(7x^2+x^{-4}+3\) not a polynomial?

Explanation opens after your attempt
Correct Answer

C. क्योंकि इसमें \(x^{-4}\) हैBecause it has \(x^{-4}\)

Step 1

Concept

In \(x^{-4}\), the power of the variable is negative. Negative powers are not accepted in a polynomial.

Step 2

Why this answer is correct

The correct answer is C. क्योंकि इसमें \(x^{-4}\) है / Because it has \(x^{-4}\). In \(x^{-4}\), the power of the variable is negative. Negative powers are not accepted in a polynomial.

Step 3

Exam Tip

\(x^{-4}\) में चर की घात ऋणात्मक है। बहुपद में ऋणात्मक घात स्वीकार नहीं होती।

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क्या \(6x^4-3x^2+x-10\) एक बहुपद है?

Is \(6x^4-3x^2+x-10\) a polynomial?

Explanation opens after your attempt
Correct Answer

A. हां, क्योंकि सभी घातें अऋणात्मक पूर्णांक हैंYes, because all powers are non-negative integers

Step 1

Concept

The powers are (4), (2), (1), and (0). All are valid according to the definition of a polynomial.

Step 2

Why this answer is correct

The correct answer is A. हां, क्योंकि सभी घातें अऋणात्मक पूर्णांक हैं / Yes, because all powers are non-negative integers. The powers are (4), (2), (1), and (0). All are valid according to the definition of a polynomial.

Step 3

Exam Tip

घातें (4), (2), (1), और (0) हैं। ये सभी बहुपद की परिभाषा के अनुसार मान्य हैं।

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बहुपद \(5x^2-8x+12\) में (x) का गुणांक क्या है?

What is the coefficient of (x) in \(5x^2-8x+12\)?

Explanation opens after your attempt
Correct Answer

B. (-8)

Step 1

Concept

The term containing (x) is (-8x). Therefore the coefficient of (x) is (-8).

Step 2

Why this answer is correct

The correct answer is B. (-8). The term containing (x) is (-8x). Therefore the coefficient of (x) is (-8).

Step 3

Exam Tip

(x) वाला पद (-8x) है। इसलिए (x) का गुणांक (-8) है।

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बहुपद \(3x^8-4x^5+2x^2-1\) की डिग्री क्या है?

What is the degree of \(3x^8-4x^5+2x^2-1\)?

Explanation opens after your attempt
Correct Answer

D. (8)

Step 1

Concept

The highest power is (8). Therefore the degree of the polynomial is (8).

Step 2

Why this answer is correct

The correct answer is D. (8). The highest power is (8). Therefore the degree of the polynomial is (8).

Step 3

Exam Tip

सबसे बड़ी घात (8) है। इसलिए बहुपद की डिग्री (8) है।

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व्यंजक \(0.5x^2+3x-1\) (x) में बहुपद है या नहीं?

Is \(0.5x^2+3x-1\) a polynomial in (x)?

Explanation opens after your attempt
Correct Answer

A. हां, क्योंकि दशमलव गुणांक भी वास्तविक संख्या हैYes, because a decimal coefficient is also a real number

Step 1

Concept

Coefficients in a polynomial can be real numbers. Here the powers of (x) are (2), (1), and (0).

Step 2

Why this answer is correct

The correct answer is A. हां, क्योंकि दशमलव गुणांक भी वास्तविक संख्या है / Yes, because a decimal coefficient is also a real number. Coefficients in a polynomial can be real numbers. Here the powers of (x) are (2), (1), and (0).

Step 3

Exam Tip

बहुपद में गुणांक वास्तविक संख्या हो सकते हैं। यहां (x) की घातें (2), (1), और (0) हैं।

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व्यंजक \(\frac{x+1}{x}\) बहुपद क्यों नहीं है?

Why is \(\frac{x+1}{x}\) not a polynomial?

Explanation opens after your attempt
Correct Answer

B. क्योंकि सरल करने पर \(\frac{1}{x}\) वाला पद आता हैBecause after simplifying, a \(\frac{1}{x}\) term appears

Step 1

Concept

\(\frac{x+1}{x}=1+\frac{1}{x}\), which contains \(x^{-1}\). Negative powers are not valid in a polynomial.

Step 2

Why this answer is correct

The correct answer is B. क्योंकि सरल करने पर \(\frac{1}{x}\) वाला पद आता है / Because after simplifying, a \(\frac{1}{x}\) term appears. \(\frac{x+1}{x}=1+\frac{1}{x}\), which contains \(x^{-1}\). Negative powers are not valid in a polynomial.

Step 3

Exam Tip

\(\frac{x+1}{x}=1+\frac{1}{x}\), जिसमें \(x^{-1}\) आता है। ऋणात्मक घात बहुपद में मान्य नहीं होती।

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बहुपद \(2x^3+0x^2+0x+9\) की डिग्री क्या है?

What is the degree of \(2x^3+0x^2+0x+9\)?

Explanation opens after your attempt
Correct Answer

C. (3)

Step 1

Concept

Terms with zero coefficient do not change the degree. The highest non-zero power is (3).

Step 2

Why this answer is correct

The correct answer is C. (3). Terms with zero coefficient do not change the degree. The highest non-zero power is (3).

Step 3

Exam Tip

शून्य गुणांक वाले पद डिग्री नहीं बदलते। सबसे बड़ी अशून्य घात (3) है।

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व्यंजक \(x^2+\sqrt[3]{x}\) बहुपद क्यों नहीं है?

Why is \(x^2+\sqrt[3]{x}\) not a polynomial?

Explanation opens after your attempt
Correct Answer

A. क्योंकि \(\sqrt[3]{x}=x^{\frac{1}{3}}\) हैBecause \(\sqrt[3]{x}=x^{\frac{1}{3}}\)

Step 1

Concept

The power of \(\sqrt[3]{x}\) is \(\frac{1}{3}\). An expression with a fractional power is not a polynomial.

Step 2

Why this answer is correct

The correct answer is A. क्योंकि \(\sqrt[3]{x}=x^{\frac{1}{3}}\) है / Because \(\sqrt[3]{x}=x^{\frac{1}{3}}\). The power of \(\sqrt[3]{x}\) is \(\frac{1}{3}\). An expression with a fractional power is not a polynomial.

Step 3

Exam Tip

\(\sqrt[3]{x}\) की घात \(\frac{1}{3}\) है। भिन्न घात होने पर व्यंजक बहुपद नहीं होता।

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कौन सा व्यंजक (x) में बहुपद है?

Which expression is a polynomial in (x)?

Explanation opens after your attempt
Correct Answer

C. \(3x^4+\frac{x}{5}-6\)

Step 1

Concept

In \(3x^4+\frac{x}{5}-6\), the powers of (x) are (4), (1), and (0). A fractional coefficient is valid.

Step 2

Why this answer is correct

The correct answer is C. \(3x^4+\frac{x}{5}-6\). In \(3x^4+\frac{x}{5}-6\), the powers of (x) are (4), (1), and (0). A fractional coefficient is valid.

Step 3

Exam Tip

\(3x^4+\frac{x}{5}-6\) में (x) की घातें (4), (1), और (0) हैं। भिन्न गुणांक मान्य होता है।

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बहुपद \(4x^2-7\) में (x) का गुणांक क्या है?

What is the coefficient of (x) in \(4x^2-7\)?

Explanation opens after your attempt
Correct Answer

D. (0)

Step 1

Concept

The term containing (x) is absent in this polynomial. So the coefficient of (x) is taken as (0).

Step 2

Why this answer is correct

The correct answer is D. (0). The term containing (x) is absent in this polynomial. So the coefficient of (x) is taken as (0).

Step 3

Exam Tip

इस बहुपद में (x) वाला पद मौजूद नहीं है। इसलिए (x) का गुणांक (0) माना जाता है।

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किस विकल्प में अशून्य नियतांक बहुपद दिया गया है?

Which option gives a non-zero constant polynomial?

Explanation opens after your attempt
Correct Answer

C. \(-\frac{5}{2}\)

Step 1

Concept

\(-\frac{5}{2}\) has no variable and is not zero. Therefore it is a non-zero constant polynomial.

Step 2

Why this answer is correct

The correct answer is C. \(-\frac{5}{2}\). \(-\frac{5}{2}\) has no variable and is not zero. Therefore it is a non-zero constant polynomial.

Step 3

Exam Tip

\(-\frac{5}{2}\) में कोई चर नहीं है और यह शून्य नहीं है। इसलिए यह अशून्य नियतांक बहुपद है।

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बहुपद \(9-2x+5x^4\) को मानक रूप में कैसे लिखेंगे?

How will \(9-2x+5x^4\) be written in standard form?

Explanation opens after your attempt
Correct Answer

B. \(5x^4-2x+9\)

Step 1

Concept

In standard form, terms are written in descending powers. Therefore \(5x^4-2x+9\) is correct.

Step 2

Why this answer is correct

The correct answer is B. \(5x^4-2x+9\). In standard form, terms are written in descending powers. Therefore \(5x^4-2x+9\) is correct.

Step 3

Exam Tip

मानक रूप में पद घटती घातों में लिखे जाते हैं। इसलिए \(5x^4-2x+9\) सही है।

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व्यंजक (\(\sqrt{3}\)x-3-\pi x+2) के बारे में सही कथन कौन सा है?

Which statement is correct about (\(\sqrt{3}\)x-3-\pi x+2)?

Explanation opens after your attempt
Correct Answer

C. यह बहुपद है क्योंकि गुणांक वास्तविक हैं और घातें मान्य हैंIt is a polynomial because coefficients are real and powers are valid

Step 1

Concept

\(\sqrt{3}\) and \(\pi\) are real coefficients. The powers of (x) are (3), (1), and (0).

Step 2

Why this answer is correct

The correct answer is C. यह बहुपद है क्योंकि गुणांक वास्तविक हैं और घातें मान्य हैं / It is a polynomial because coefficients are real and powers are valid. \(\sqrt{3}\) and \(\pi\) are real coefficients. The powers of (x) are (3), (1), and (0).

Step 3

Exam Tip

\(\sqrt{3}\) और \(\pi\) वास्तविक गुणांक हैं। (x) की घातें (3), (1), और (0) हैं।

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व्यंजक \(x^2+\frac{1}{x^3}\) बहुपद क्यों नहीं है?

Why is \(x^2+\frac{1}{x^3}\) not a polynomial?

Explanation opens after your attempt
Correct Answer

B. क्योंकि \(\frac{1}{x^3}=x^{-3}\) हैBecause \(\frac{1}{x^3}=x^{-3}\)

Step 1

Concept

In \(\frac{1}{x^3}\), the variable has power (-3). Negative powers are not valid in a polynomial.

Step 2

Why this answer is correct

The correct answer is B. क्योंकि \(\frac{1}{x^3}=x^{-3}\) है / Because \(\frac{1}{x^3}=x^{-3}\). In \(\frac{1}{x^3}\), the variable has power (-3). Negative powers are not valid in a polynomial.

Step 3

Exam Tip

\(\frac{1}{x^3}\) में चर की घात (-3) है। बहुपद में ऋणात्मक घात मान्य नहीं होती।

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बहुपद \(x^{10}+2x^5+1\) की डिग्री क्या है?

What is the degree of \(x^{10}+2x^5+1\)?

Explanation opens after your attempt
Correct Answer

B. (10)

Step 1

Concept

The highest power is (10). Therefore the degree of the polynomial is (10).

Step 2

Why this answer is correct

The correct answer is B. (10). The highest power is (10). Therefore the degree of the polynomial is (10).

Step 3

Exam Tip

सबसे बड़ी घात (10) है। इसलिए बहुपद की डिग्री (10) है।

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कौन सा व्यंजक रेखीय बहुपद नहीं है?

Which expression is not a linear polynomial?

Explanation opens after your attempt
Correct Answer

C. \(x^2+1\)

Step 1

Concept

A linear polynomial has degree (1). The degree of \(x^2+1\) is (2).

Step 2

Why this answer is correct

The correct answer is C. \(x^2+1\). A linear polynomial has degree (1). The degree of \(x^2+1\) is (2).

Step 3

Exam Tip

रेखीय बहुपद की डिग्री (1) होती है। \(x^2+1\) की डिग्री (2) है।

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कौन सा व्यंजक बहुपद है लेकिन द्विघात बहुपद नहीं है?

Which expression is a polynomial but not a quadratic polynomial?

Explanation opens after your attempt
Correct Answer

B. \(4x^3+x-1\)

Step 1

Concept

\(4x^3+x-1\) is a polynomial and its degree is (3). Therefore it is not quadratic.

Step 2

Why this answer is correct

The correct answer is B. \(4x^3+x-1\). \(4x^3+x-1\) is a polynomial and its degree is (3). Therefore it is not quadratic.

Step 3

Exam Tip

\(4x^3+x-1\) बहुपद है और इसकी डिग्री (3) है। इसलिए यह द्विघात नहीं है।

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बहुपद \(2x^6-4x^2+8\) में \(x^6\) का गुणांक क्या है?

What is the coefficient of \(x^6\) in \(2x^6-4x^2+8\)?

Explanation opens after your attempt
Correct Answer

B. (2)

Step 1

Concept

The term containing \(x^6\) is \(2x^6\). Therefore the coefficient of \(x^6\) is (2).

Step 2

Why this answer is correct

The correct answer is B. (2). The term containing \(x^6\) is \(2x^6\). Therefore the coefficient of \(x^6\) is (2).

Step 3

Exam Tip

\(x^6\) वाला पद \(2x^6\) है। इसलिए \(x^6\) का गुणांक (2) है।

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व्यंजक \(x^2+x^{-1}+x^0\) बहुपद है या नहीं?

Is \(x^2+x^{-1}+x^0\) a polynomial or not?

Explanation opens after your attempt
Correct Answer

C. नहीं, क्योंकि \(x^{-1}\) की घात ऋणात्मक हैNo, because \(x^{-1}\) has a negative power

Step 1

Concept

In \(x^{-1}\), the variable has a negative power. One invalid power makes the whole expression not a polynomial.

Step 2

Why this answer is correct

The correct answer is C. नहीं, क्योंकि \(x^{-1}\) की घात ऋणात्मक है / No, because \(x^{-1}\) has a negative power. In \(x^{-1}\), the variable has a negative power. One invalid power makes the whole expression not a polynomial.

Step 3

Exam Tip

\(x^{-1}\) में चर की घात ऋणात्मक है। एक अमान्य घात होने से पूरा व्यंजक बहुपद नहीं रहता।

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व्यंजक \(\frac{x^2}{5}-\frac{3x}{2}+1\) (x) में बहुपद है या नहीं?

Is \(\frac{x^2}{5}-\frac{3x}{2}+1\) a polynomial in (x)?

Explanation opens after your attempt
Correct Answer

B. हां, क्योंकि चर की घातें (2), (1), और (0) हैंYes, because the variable powers are (2), (1), and (0)

Step 1

Concept

Fractional coefficients are valid in a polynomial. Here all variable powers are non-negative integers.

Step 2

Why this answer is correct

The correct answer is B. हां, क्योंकि चर की घातें (2), (1), और (0) हैं / Yes, because the variable powers are (2), (1), and (0). Fractional coefficients are valid in a polynomial. Here all variable powers are non-negative integers.

Step 3

Exam Tip

भिन्न गुणांक बहुपद में मान्य होते हैं। यहां चर की सभी घातें अऋणात्मक पूर्णांक हैं।

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किस विकल्प में (x) में बहुपद नहीं है?

Which option is not a polynomial in (x)?

Explanation opens after your attempt
Correct Answer

D. \(\frac{x}{x+1}\)

Step 1

Concept

In \(\frac{x}{x+1}\), the variable is in the denominator. Such an expression does not satisfy the definition of a polynomial.

Step 2

Why this answer is correct

The correct answer is D. \(\frac{x}{x+1}\). In \(\frac{x}{x+1}\), the variable is in the denominator. Such an expression does not satisfy the definition of a polynomial.

Step 3

Exam Tip

\(\frac{x}{x+1}\) में चर हर में है। ऐसा व्यंजक बहुपद की परिभाषा को पूरा नहीं करता।

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व्यंजक \(2x^2+3\sqrt{x}+1\) (x) में बहुपद क्यों नहीं है?

Why is \(2x^2+3\sqrt{x}+1\) not a polynomial in (x)?

Explanation opens after your attempt
Correct Answer

B. क्योंकि \(\sqrt{x}=x^{\frac{1}{2}}\) हैBecause \(\sqrt{x}=x^{\frac{1}{2}}\)

Step 1

Concept

In \(\sqrt{x}\), the power of the variable is \(\frac{1}{2}\). In a polynomial, the variable power must be a non-negative integer.

Step 2

Why this answer is correct

The correct answer is B. क्योंकि \(\sqrt{x}=x^{\frac{1}{2}}\) है / Because \(\sqrt{x}=x^{\frac{1}{2}}\). In \(\sqrt{x}\), the power of the variable is \(\frac{1}{2}\). In a polynomial, the variable power must be a non-negative integer.

Step 3

Exam Tip

\(\sqrt{x}\) में चर की घात \(\frac{1}{2}\) है। बहुपद में चर की घात अऋणात्मक पूर्णांक होनी चाहिए।

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FAQs

Class 9 Mathematics Quiz FAQs

How many questions are in this quiz?

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