यदि (p(x)=(a+2)x-7+4x-3-5) और (a=-2), तो (p(x)) की डिग्री क्या है?

If (p(x)=(a+2)x-7+4x-3-5) and (a=-2), what is the degree of (p(x))?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (3)

Step 1

Concept

Putting (a=-2) makes the coefficient of \(x^7\) equal to (0). The remaining highest power is (3).

Step 2

Why this answer is correct

The correct answer is C. (3). Putting (a=-2) makes the coefficient of \(x^7\) equal to (0). The remaining highest power is (3).

Step 3

Exam Tip

(a=-2) रखने पर \(x^7\) का गुणांक (0) हो जाता है। बची हुई सबसे बड़ी घात (3) है।

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Mathematics Answer, Explanation and Revision Hints

यदि (p(x)=(a+2)x-7+4x-3-5) और (a=-2), तो (p(x)) की डिग्री क्या है? / If (p(x)=(a+2)x-7+4x-3-5) and (a=-2), what is the degree of (p(x))?

Correct Answer: C. (3). Explanation: (a=-2) रखने पर \(x^7\) का गुणांक (0) हो जाता है। बची हुई सबसे बड़ी घात (3) है। / Putting (a=-2) makes the coefficient of \(x^7\) equal to (0). The remaining highest power is (3).

Which concept should I revise for this Mathematics MCQ?

Putting (a=-2) makes the coefficient of \(x^7\) equal to (0). The remaining highest power is (3).

What exam hint can help solve this Mathematics question?

(a=-2) रखने पर \(x^7\) का गुणांक (0) हो जाता है। बची हुई सबसे बड़ी घात (3) है।