\(3.5^2-2.5^2\) का मान क्या है?
What is the value of \(3.5^2-2.5^2\)?
Explanation opens after your attempt
B. (6)
Concept
Using (a-2-b-2=(a-b)(a+b)), ((3.5-2.5)(3.5+2.5)=1\cdot6=6). Identities also work with decimals.
Why this answer is correct
The correct answer is B. (6). Using (a-2-b-2=(a-b)(a+b)), ((3.5-2.5)(3.5+2.5)=1\cdot6=6). Identities also work with decimals.
Exam Tip
(a-2-b-2=(a-b)(a+b)) से ((3.5-2.5)(3.5+2.5)=1\cdot6=6)। पहचान दशमलव में भी लागू होती है।
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