यदि \(x^2+x=20\), तो \(3x^2+3x-4\) का मान क्या होगा?

If \(x^2+x=20\), what is the value of \(3x^2+3x-4\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. (56)

Step 1

Concept

(3x-2+3x-4=3\(x^2+x\)-4). Using the given value, (3(20)-4=56).

Step 2

Why this answer is correct

The correct answer is A. (56). (3x-2+3x-4=3\(x^2+x\)-4). Using the given value, (3(20)-4=56).

Step 3

Exam Tip

(3x-2+3x-4=3\(x^2+x\)-4) है। दिए मान से (3(20)-4=56)।

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Mathematics Answer, Explanation and Revision Hints

यदि \(x^2+x=20\), तो \(3x^2+3x-4\) का मान क्या होगा? / If \(x^2+x=20\), what is the value of \(3x^2+3x-4\)?

Correct Answer: A. (56). Explanation: (3x-2+3x-4=3\(x^2+x\)-4) है। दिए मान से (3(20)-4=56)। / (3x-2+3x-4=3\(x^2+x\)-4). Using the given value, (3(20)-4=56).

Which concept should I revise for this Mathematics MCQ?

(3x-2+3x-4=3\(x^2+x\)-4). Using the given value, (3(20)-4=56).

What exam hint can help solve this Mathematics question?

(3x-2+3x-4=3\(x^2+x\)-4) है। दिए मान से (3(20)-4=56)।