यदि (q(x)=(k+5)2x-9+(k+5)x-4-6x-2+8) और (k=-5), तो (q(x)) की डिग्री क्या है?

If (q(x)=(k+5)2x-9+(k+5)x-4-6x-2+8) and (k=-5), what is the degree of (q(x))?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

D. (2)

Step 1

Concept

At (k=-5), both \(x^9\) and \(x^4\) terms vanish. The remaining \(-6x^2+8\) has degree (2).

Step 2

Why this answer is correct

The correct answer is D. (2). At (k=-5), both \(x^9\) and \(x^4\) terms vanish. The remaining \(-6x^2+8\) has degree (2).

Step 3

Exam Tip

(k=-5) पर \(x^9\) और \(x^4\) दोनों पद हट जाते हैं। बचा \(-6x^2+8\) है जिसकी डिग्री (2) है।

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Mathematics Answer, Explanation and Revision Hints

यदि (q(x)=(k+5)2x-9+(k+5)x-4-6x-2+8) और (k=-5), तो (q(x)) की डिग्री क्या है? / If (q(x)=(k+5)2x-9+(k+5)x-4-6x-2+8) and (k=-5), what is the degree of (q(x))?

Correct Answer: D. (2). Explanation: (k=-5) पर \(x^9\) और \(x^4\) दोनों पद हट जाते हैं। बचा \(-6x^2+8\) है जिसकी डिग्री (2) है। / At (k=-5), both \(x^9\) and \(x^4\) terms vanish. The remaining \(-6x^2+8\) has degree (2).

Which concept should I revise for this Mathematics MCQ?

At (k=-5), both \(x^9\) and \(x^4\) terms vanish. The remaining \(-6x^2+8\) has degree (2).

What exam hint can help solve this Mathematics question?

(k=-5) पर \(x^9\) और \(x^4\) दोनों पद हट जाते हैं। बचा \(-6x^2+8\) है जिसकी डिग्री (2) है।