\(4a^2-4ab+b^2-25c^2\) का सही गुणनखंड कौन सा है?
Which is the correct factorisation of \(4a^2-4ab+b^2-25c^2\)?
Explanation opens after your attempt
B. ( (2a-b-5c)(2a-b+5c) )
Concept
Write \(4a^2-4ab+b^2\) as ((2a-b)2). Exam tip: then use (25c-2=(5c)2) for difference of squares.
Why this answer is correct
The correct answer is B. ( (2a-b-5c)(2a-b+5c) ). Write \(4a^2-4ab+b^2\) as ((2a-b)2). Exam tip: then use (25c-2=(5c)2) for difference of squares.
Exam Tip
\(4a^2-4ab+b^2\) को ((2a-b)2) लिखें। परीक्षा में फिर (25c-2=(5c)2) लगाकर अंतर वर्ग करें।
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