\(x^2+2xy+y^2-9z^2\) का सही गुणनखंड कौन सा है?
Which is the correct factorisation of \(x^2+2xy+y^2-9z^2\)?
Explanation opens after your attempt
B. ( (x+y-3z)(x+y+3z) )
Concept
First convert \(x^2+2xy+y^2\) into ((x+y)2). Exam tip: after forming a perfect square, apply difference of squares.
Why this answer is correct
The correct answer is B. ( (x+y-3z)(x+y+3z) ). First convert \(x^2+2xy+y^2\) into ((x+y)2). Exam tip: after forming a perfect square, apply difference of squares.
Exam Tip
पहले \(x^2+2xy+y^2\) को ((x+y)2) बनाएं। परीक्षा में पूर्ण वर्ग के बाद अंतर वर्ग लगाएं।
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