\(x^2-4xy+4y^2-25\) का गुणनखंड रूप चुनें।
Choose the factorised form of \(x^2-4xy+4y^2-25\).
Explanation opens after your attempt
A. ((x-2y-5)(x-2y+5))सही रूप
Concept
First (x-2-4xy+4y-2=(x-2y)2), then use \(25=5^2\). In exams identify the perfect-square trinomial.
Why this answer is correct
The correct answer is A. ((x-2y-5)(x-2y+5)) / सही रूप. First (x-2-4xy+4y-2=(x-2y)2), then use \(25=5^2\). In exams identify the perfect-square trinomial.
Exam Tip
पहले (x-2-4xy+4y-2=(x-2y)2), फिर \(25=5^2\) लगाएं। परीक्षा में पूर्ण वर्ग त्रिपद को पहचानें।
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