\(x^2+2x+1-y^2-4y-4\) का सही गुणनखंड कौन सा है?
Which is the correct factorisation of \(x^2+2x+1-y^2-4y-4\)?
Explanation opens after your attempt
Correct Answer
A. ( (x-y-1)(x+y+3) )
Concept
Write it as ((x+1)2-(y+2)2). On simplifying, we get ((x-y-1)(x+y+3)).
Why this answer is correct
The correct answer is A. ( (x-y-1)(x+y+3) ). Write it as ((x+1)2-(y+2)2). On simplifying, we get ((x-y-1)(x+y+3)).
Exam Tip
इसे ((x+1)2-(y+2)2) लिखें। सरल करने पर ((x-y-1)(x+y+3)) मिलता है।
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