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))?
Explanation opens after your attempt
D. (2)
Concept
At (k=-5), both \(x^9\) and \(x^4\) terms vanish. The remaining \(-6x^2+8\) has degree (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).
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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