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3x plus minus 4 MCQ Questions for Class 9

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Question 1/1 Medium Mathematics Exploring Algebraic Identities Algebraic identities Class 9 Level 63

( (3x+4)2-(3x-4)2 ) का सरल रूप क्या है?

What is the simplified form of ( (3x+4)2-(3x-4)2 )?

Explanation opens after your attempt
Correct Answer

A. (48x)

Step 1

Concept

( (u+v)2-(u-v)2=4uv ). Here (u=3x) and (v=4), so the result is (48x).

Step 2

Why this answer is correct

The correct answer is A. (48x). ( (u+v)2-(u-v)2=4uv ). Here (u=3x) and (v=4), so the result is (48x).

Step 3

Exam Tip

( (u+v)2-(u-v)2=4uv ) है। यहाँ (u=3x) और (v=4) इसलिए (48x) मिलेगा।

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