\(16a^2-40ab+25b^2\) किसका पूर्ण वर्ग है?
Whose perfect square is \(16a^2-40ab+25b^2\)?
Explanation opens after your attempt
A. ((4a-5b)2)
Concept
Here (16a-2=(4a)2) and (25b-2=(5b)2), with middle term (-2(4a)(5b)). Exam tip: identify negative perfect squares.
Why this answer is correct
The correct answer is A. ((4a-5b)2). Here (16a-2=(4a)2) and (25b-2=(5b)2), with middle term (-2(4a)(5b)). Exam tip: identify negative perfect squares.
Exam Tip
(16a-2=(4a)2) और (25b-2=(5b)2), बीच का पद (-2(4a)(5b)) है। परीक्षा में ऋणात्मक पूर्ण वर्ग पहचानें।
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