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

Mathematics Introduction to Polynomials Definition of polynomial Expert Class 9 Level 23

Level 23 • 4/50 questions • 25 seconds per question.

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This level needs 46 more active questions. Admin panel me same class, subject, difficulty aur level_no 23 par question add karein.
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Question 1/4 Expert Mathematics Introduction to Polynomials Algebraic expressions Class 9 Level 23

(2p(p-3)+4(p+1)) को सरल करने पर क्या मिलेगा?

What is obtained after simplifying (2p(p-3)+4(p+1))?

Explanation opens after your attempt
Correct Answer

A. \(2p^2-2p+4\)

Step 1

Concept

(2p(p-3)=2p-2-6p) and (4(p+1)=4p+4). Combining gives \(2p^2-2p+4\).

Step 2

Why this answer is correct

The correct answer is A. \(2p^2-2p+4\). (2p(p-3)=2p-2-6p) and (4(p+1)=4p+4). Combining gives \(2p^2-2p+4\).

Step 3

Exam Tip

(2p(p-3)=2p-2-6p) और (4(p+1)=4p+4)। मिलाने पर \(2p^2-2p+4\) मिलेगा।

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Question 2/4 Expert Mathematics Introduction to Polynomials Algebraic expressions Class 9 Level 23

\(x^2+2x-3\) और \(2x^2-x+4\) का योग क्या होगा?

What is the sum of \(x^2+2x-3\) and \(2x^2-x+4\)?

Explanation opens after your attempt
Correct Answer

A. \(3x^2+x+1\)

Step 1

Concept

Adding like terms gives \(x^2+2x^2=3x^2\), (2x-x=x), and (-3+4=1).

Step 2

Why this answer is correct

The correct answer is A. \(3x^2+x+1\). Adding like terms gives \(x^2+2x^2=3x^2\), (2x-x=x), and (-3+4=1).

Step 3

Exam Tip

समान पद जोड़ने पर \(x^2+2x^2=3x^2\), (2x-x=x) और (-3+4=1)।

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Question 3/4 Expert Mathematics Introduction to Polynomials Algebraic expressions Class 9 Level 23

\(5x^2-3x+8\) में से \(2x^2+4x-1\) घटाने पर क्या मिलेगा?

What is obtained by subtracting \(2x^2+4x-1\) from \(5x^2-3x+8\)?

Explanation opens after your attempt
Correct Answer

B. \(3x^2-7x+9\)

Step 1

Concept

Subtraction gives (5x-2-3x+8-\(2x^2+4x-1\)). The simplified form is \(3x^2-7x+9\).

Step 2

Why this answer is correct

The correct answer is B. \(3x^2-7x+9\). Subtraction gives (5x-2-3x+8-\(2x^2+4x-1\)). The simplified form is \(3x^2-7x+9\).

Step 3

Exam Tip

घटाने पर (5x-2-3x+8-\(2x^2+4x-1\)) मिलेगा। सरल रूप \(3x^2-7x+9\) है।

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Question 4/4 Expert Mathematics Introduction to Polynomials Algebraic expressions Class 9 Level 23

कौन-सा व्यंजक \(2x^2-3xy+y^2\) में \(-x^2+5xy-4y^2\) जोड़ने पर मिलता है?

Which expression is obtained by adding \(-x^2+5xy-4y^2\) to \(2x^2-3xy+y^2\)?

Explanation opens after your attempt
Correct Answer

A. \(x^2+2xy-3y^2\)

Step 1

Concept

Adding like terms gives \(2x^2-x^2=x^2\), (-3xy+5xy=2xy), and \(y^2-4y^2=-3y^2\).

Step 2

Why this answer is correct

The correct answer is A. \(x^2+2xy-3y^2\). Adding like terms gives \(2x^2-x^2=x^2\), (-3xy+5xy=2xy), and \(y^2-4y^2=-3y^2\).

Step 3

Exam Tip

समान पद जोड़ने पर \(2x^2-x^2=x^2\), (-3xy+5xy=2xy), और \(y^2-4y^2=-3y^2\)।

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