\(25x^2+30xy+9y^2-49\) का गुणनखंड रूप क्या है?
What is the factorised form of \(25x^2+30xy+9y^2-49\)?
Explanation opens after your attempt
A. ((5x+3y-7)(5x+3y+7))
Concept
First (25x-2+30xy+9y-2=(5x+3y)2). In exams, solve it like \(A^2-7^2\).
Why this answer is correct
The correct answer is A. ((5x+3y-7)(5x+3y+7)). First (25x-2+30xy+9y-2=(5x+3y)2). In exams, solve it like \(A^2-7^2\).
Exam Tip
पहले (25x-2+30xy+9y-2=(5x+3y)2) है। परीक्षा में इसे \(A^2-7^2\) की तरह हल करें।
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