\(4x^2-12xy+9y^2-25\) का गुणनखंड रूप कौन सा है?
Which is the factorised form of \(4x^2-12xy+9y^2-25\)?
Explanation opens after your attempt
A. ((2x-3y-5)(2x-3y+5))
Concept
First (4x-2-12xy+9y-2=(2x-3y)2), then use difference of squares with \(25=5^2\). Exam tip: form the perfect square and factor further.
Why this answer is correct
The correct answer is A. ((2x-3y-5)(2x-3y+5)). First (4x-2-12xy+9y-2=(2x-3y)2), then use difference of squares with \(25=5^2\). Exam tip: form the perfect square and factor further.
Exam Tip
पहले (4x-2-12xy+9y-2=(2x-3y)2) बनता है फिर \(25=5^2\) से वर्गों का अंतर लगाएं। परीक्षा में पूर्ण वर्ग बनाकर अगला गुणनखंड करें।
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