\( 121-4y^2 \) का सही गुणनखंड रूप कौन सा है?
Which is the correct factor form of \( 121-4y^2 \)?
Explanation opens after your attempt
Correct Answer
B. ( (11+2y)(11-2y) )
Concept
\(121=11^2\) and (4y-2=(2y)2). Difference of squares gives ( (11+2y)(11-2y) ).
Why this answer is correct
The correct answer is B. ( (11+2y)(11-2y) ). \(121=11^2\) and (4y-2=(2y)2). Difference of squares gives ( (11+2y)(11-2y) ).
Exam Tip
\(121=11^2\) और (4y-2=(2y)2) है। अंतर के वर्गों से ( (11+2y)(11-2y) ) मिलेगा।
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