\(9x^2-30x+25-4y^2\) का गुणनखंडन क्या है?
What is the factorisation of \(9x^2-30x+25-4y^2\)?
Explanation opens after your attempt
A. ((3x-5-2y)(3x-5+2y))
Concept
First identify (9x-2-30x+25=(3x-5)2). Then subtract (4y-2=(2y)2) and use difference of squares.
Why this answer is correct
The correct answer is A. ((3x-5-2y)(3x-5+2y)). First identify (9x-2-30x+25=(3x-5)2). Then subtract (4y-2=(2y)2) and use difference of squares.
Exam Tip
पहले (9x-2-30x+25=(3x-5)2) पहचानें। फिर (4y-2=(2y)2) घटाकर वर्गों का अंतर लगाएं।
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