यदि \(x^2-2x=15\), तो \(2x^2-4x+7\) का मान क्या होगा?

If \(x^2-2x=15\), what is the value of \(2x^2-4x+7\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (37)

Step 1

Concept

(2x-2-4x+7=2\(x^2-2x\)+7). Using the given value, (2(15)+7=37).

Step 2

Why this answer is correct

The correct answer is C. (37). (2x-2-4x+7=2\(x^2-2x\)+7). Using the given value, (2(15)+7=37).

Step 3

Exam Tip

(2x-2-4x+7=2\(x^2-2x\)+7) है। दिए मान से (2(15)+7=37)।

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Mathematics Answer, Explanation and Revision Hints

यदि \(x^2-2x=15\), तो \(2x^2-4x+7\) का मान क्या होगा? / If \(x^2-2x=15\), what is the value of \(2x^2-4x+7\)?

Correct Answer: C. (37). Explanation: (2x-2-4x+7=2\(x^2-2x\)+7) है। दिए मान से (2(15)+7=37)। / (2x-2-4x+7=2\(x^2-2x\)+7). Using the given value, (2(15)+7=37).

Which concept should I revise for this Mathematics MCQ?

(2x-2-4x+7=2\(x^2-2x\)+7). Using the given value, (2(15)+7=37).

What exam hint can help solve this Mathematics question?

(2x-2-4x+7=2\(x^2-2x\)+7) है। दिए मान से (2(15)+7=37)।