किस मान पर ((d+4)x-7+(d-2)x-4+15) की डिग्री (4) होगी?

For which value will the degree of ((d+4)x-7+(d-2)x-4+15) be (4)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (d=-4)

Step 1

Concept

For degree (4), the \(x^7\) term must vanish and the \(x^4\) term must remain. This condition holds at (d=-4).

Step 2

Why this answer is correct

The correct answer is B. (d=-4). For degree (4), the \(x^7\) term must vanish and the \(x^4\) term must remain. This condition holds at (d=-4).

Step 3

Exam Tip

डिग्री (4) के लिए \(x^7\) पद हटना चाहिए और \(x^4\) पद बचना चाहिए। (d=-4) पर यह शर्त पूरी होती है।

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Mathematics Answer, Explanation and Revision Hints

किस मान पर ((d+4)x-7+(d-2)x-4+15) की डिग्री (4) होगी? / For which value will the degree of ((d+4)x-7+(d-2)x-4+15) be (4)?

Correct Answer: B. (d=-4). Explanation: डिग्री (4) के लिए \(x^7\) पद हटना चाहिए और \(x^4\) पद बचना चाहिए। (d=-4) पर यह शर्त पूरी होती है। / For degree (4), the \(x^7\) term must vanish and the \(x^4\) term must remain. This condition holds at (d=-4).

Which concept should I revise for this Mathematics MCQ?

For degree (4), the \(x^7\) term must vanish and the \(x^4\) term must remain. This condition holds at (d=-4).

What exam hint can help solve this Mathematics question?

डिग्री (4) के लिए \(x^7\) पद हटना चाहिए और \(x^4\) पद बचना चाहिए। (d=-4) पर यह शर्त पूरी होती है।