यदि \(64x^2-81y^2\) को दृश्य रूप में वर्गों के अंतर की तरह देखें, तो सही गुणनखंड कौन सा है?
If \(64x^2-81y^2\) is viewed visually as a difference of squares, which factorisation is correct?
Explanation opens after your attempt
A. ((8x-9y)(8x+9y))
Concept
(64x-2=(8x)2) and (81y-2=(9y)2). So the factorisation is ((8x-9y)(8x+9y)).
Why this answer is correct
The correct answer is A. ((8x-9y)(8x+9y)). (64x-2=(8x)2) and (81y-2=(9y)2). So the factorisation is ((8x-9y)(8x+9y)).
Exam Tip
(64x-2=(8x)2) और (81y-2=(9y)2) है। इसलिए अंतर का गुणनखंड ((8x-9y)(8x+9y)) है।
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