\(25x^2-20xy+4y^2-36\) का सही गुणनखंड कौन सा है?
Which is the correct factorisation of \(25x^2-20xy+4y^2-36\)?
Explanation opens after your attempt
A. ( (5x-2y-6)(5x-2y+6) )
Concept
First write \(25x^2-20xy+4y^2\) as ((5x-2y)2). Exam tip: use \(36=6^2\) for difference of squares.
Why this answer is correct
The correct answer is A. ( (5x-2y-6)(5x-2y+6) ). First write \(25x^2-20xy+4y^2\) as ((5x-2y)2). Exam tip: use \(36=6^2\) for difference of squares.
Exam Tip
पहले \(25x^2-20xy+4y^2\) को ((5x-2y)2) बनाएं। परीक्षा में \(36=6^2\) से अंतर वर्ग लागू करें।
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