यदि (q(x)=(a+2)x-6+(a-4)x-5+3) की घात ठीक (5) हो, तो (a) का मान क्या होगा?

If (q(x)=(a+2)x-6+(a-4)x-5+3) has degree exactly (5), what is the value of (a)?

Explanation opens after your attempt
Correct Answer

B. (-2)

Step 1

Concept

For degree (5), the \(x^6\) coefficient must be zero and the \(x^5\) coefficient must be non-zero. At (a=-2), (a-4=-6) remains non-zero.

Step 2

Why this answer is correct

The correct answer is B. (-2). For degree (5), the \(x^6\) coefficient must be zero and the \(x^5\) coefficient must be non-zero. At (a=-2), (a-4=-6) remains non-zero.

Step 3

Exam Tip

घात (5) के लिए \(x^6\) का गुणांक शून्य और \(x^5\) का गुणांक अशून्य होना चाहिए। (a=-2) पर (a-4=-6) अशून्य रहता है।

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Mathematics Answer, Explanation and Revision Hints

यदि (q(x)=(a+2)x-6+(a-4)x-5+3) की घात ठीक (5) हो, तो (a) का मान क्या होगा? / If (q(x)=(a+2)x-6+(a-4)x-5+3) has degree exactly (5), what is the value of (a)?

Correct Answer: B. (-2). Explanation: घात (5) के लिए \(x^6\) का गुणांक शून्य और \(x^5\) का गुणांक अशून्य होना चाहिए। (a=-2) पर (a-4=-6) अशून्य रहता है। / For degree (5), the \(x^6\) coefficient must be zero and the \(x^5\) coefficient must be non-zero. At (a=-2), (a-4=-6) remains non-zero.

Which concept should I revise for this Mathematics MCQ?

For degree (5), the \(x^6\) coefficient must be zero and the \(x^5\) coefficient must be non-zero. At (a=-2), (a-4=-6) remains non-zero.

What exam hint can help solve this Mathematics question?

घात (5) के लिए \(x^6\) का गुणांक शून्य और \(x^5\) का गुणांक अशून्य होना चाहिए। (a=-2) पर (a-4=-6) अशून्य रहता है।