( (5x+1)2-(5x-1)2 ) का मान क्या है?

What is the value of ( (5x+1)2-(5x-1)2 )?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

B. (20x)

Step 1

Concept

( (u+v)2-(u-v)2=4uv ). Here (u=5x) and (v=1), so it is (20x).

Step 2

Why this answer is correct

The correct answer is B. (20x). ( (u+v)2-(u-v)2=4uv ). Here (u=5x) and (v=1), so it is (20x).

Step 3

Exam Tip

( (u+v)2-(u-v)2=4uv ) है। यहाँ (u=5x) और (v=1) इसलिए (20x) है।

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Mathematics Answer, Explanation and Revision Hints

( (5x+1)2-(5x-1)2 ) का मान क्या है? / What is the value of ( (5x+1)2-(5x-1)2 )?

Correct Answer: B. (20x). Explanation: ( (u+v)2-(u-v)2=4uv ) है। यहाँ (u=5x) और (v=1) इसलिए (20x) है। / ( (u+v)2-(u-v)2=4uv ). Here (u=5x) and (v=1), so it is (20x).

Which concept should I revise for this Mathematics MCQ?

( (u+v)2-(u-v)2=4uv ). Here (u=5x) and (v=1), so it is (20x).

What exam hint can help solve this Mathematics question?

( (u+v)2-(u-v)2=4uv ) है। यहाँ (u=5x) और (v=1) इसलिए (20x) है।