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degree-change MCQ Questions for Class 9

degree-change se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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3 questions tagged with degree-change.

Question 1/3 Expert Mathematics Introduction to Polynomials Definition of polynomial Class 9 Level 27

यदि (p(x)=bx-4+3x-3-2x+1) और (b=0), तो (p(x)) की घात क्या होगी?

If (p(x)=bx-4+3x-3-2x+1) and (b=0), what will be the degree of (p(x))?

Explanation opens after your attempt
Correct Answer

C. (3)

Step 1

Concept

When (b=0), the \(x^4\) term disappears. Then the highest power remains (3).

Step 2

Why this answer is correct

The correct answer is C. (3). When (b=0), the \(x^4\) term disappears. Then the highest power remains (3).

Step 3

Exam Tip

(b=0) होने पर \(x^4\) वाला पद हट जाता है। तब सबसे बड़ी घात (3) रहती है।

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Question 2/3 Expert Mathematics Introduction to Polynomials Definition of polynomial Class 9 Level 26

यदि (p(x)=(a-2)x-4+5x-2-3) में (a=2), तो (p(x)) की घात क्या होगी?

If (a=2) in (p(x)=(a-2)x-4+5x-2-3), what will be the degree of (p(x))?

Explanation opens after your attempt
Correct Answer

C. (2)

Step 1

Concept

At (a=2), the coefficient of \(x^4\) becomes (0). Therefore, the highest remaining power is (2).

Step 2

Why this answer is correct

The correct answer is C. (2). At (a=2), the coefficient of \(x^4\) becomes (0). Therefore, the highest remaining power is (2).

Step 3

Exam Tip

(a=2) पर \(x^4\) का गुणांक (0) हो जाता है। इसलिए सबसे बड़ी बची घात (2) है।

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Question 3/3 Medium Mathematics Introduction to Polynomials Definition of polynomial Class 9 Level 27

यदि (p(x)=ax-4+3x-2-1) में (a=0) हो, तो घात क्या होगी?

If (a=0) in (p(x)=ax-4+3x-2-1), what will be the degree?

Explanation opens after your attempt
Correct Answer

C. (2)

Step 1

Concept

When (a=0), the \(x^4\) term disappears. The remaining polynomial \(3x^2-1\) has degree (2).

Step 2

Why this answer is correct

The correct answer is C. (2). When (a=0), the \(x^4\) term disappears. The remaining polynomial \(3x^2-1\) has degree (2).

Step 3

Exam Tip

(a=0) होने पर \(x^4\) वाला पद हट जाता है। शेष बहुपद \(3x^2-1\) की घात (2) है।

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