\(4p^2-12pq+9q^2-25r^2\) का गुणनखंड रूप क्या है?
What is the factorised form of \(4p^2-12pq+9q^2-25r^2\)?
Explanation opens after your attempt
D. ( (2p-3q-5r)(2p-3q+5r) )
Concept
First write \(4p^2-12pq+9q^2\) as ((2p-3q)2). Exam tip: identify ((a-b)2) from the negative middle term.
Why this answer is correct
The correct answer is D. ( (2p-3q-5r)(2p-3q+5r) ). First write \(4p^2-12pq+9q^2\) as ((2p-3q)2). Exam tip: identify ((a-b)2) from the negative middle term.
Exam Tip
पहले \(4p^2-12pq+9q^2\) को ((2p-3q)2) लिखें। परीक्षा में ऋणात्मक मध्य पद से ((a-b)2) पहचानें।
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