\(2.5^2-1.5^2\) का मान क्या है?

What is the value of \(2.5^2-1.5^2\)?

Explanation opens after your attempt
Correct Answer

C. (4)

Step 1

Concept

Using (a-2-b-2=(a-b)(a+b)), ((2.5-1.5)(2.5+1.5)=1\cdot4=4). Identities also work with decimals.

Step 2

Why this answer is correct

The correct answer is C. (4). Using (a-2-b-2=(a-b)(a+b)), ((2.5-1.5)(2.5+1.5)=1\cdot4=4). Identities also work with decimals.

Step 3

Exam Tip

(a-2-b-2=(a-b)(a+b)) से ((2.5-1.5)(2.5+1.5)=1\cdot4=4)। पहचान दशमलव में भी लागू होती है।

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Mathematics Answer, Explanation and Revision Hints

\(2.5^2-1.5^2\) का मान क्या है? / What is the value of \(2.5^2-1.5^2\)?

Correct Answer: C. (4). Explanation: (a-2-b-2=(a-b)(a+b)) से ((2.5-1.5)(2.5+1.5)=1\cdot4=4)। पहचान दशमलव में भी लागू होती है। / Using (a-2-b-2=(a-b)(a+b)), ((2.5-1.5)(2.5+1.5)=1\cdot4=4). Identities also work with decimals.

Which concept should I revise for this Mathematics MCQ?

Using (a-2-b-2=(a-b)(a+b)), ((2.5-1.5)(2.5+1.5)=1\cdot4=4). Identities also work with decimals.

What exam hint can help solve this Mathematics question?

(a-2-b-2=(a-b)(a+b)) से ((2.5-1.5)(2.5+1.5)=1\cdot4=4)। पहचान दशमलव में भी लागू होती है।