\(x^4+2x^2y^2+y^4-16\) का सही गुणनखंड रूप क्या है?
What is the correct factorised form of \(x^4+2x^2y^2+y^4-16\)?
Explanation opens after your attempt
A. (\(x^2+y^2-4\)\(x^2+y^2+4\))
Concept
First (x-4+2x-2y-2+y-4=\(x^2+y^2\)2), and then \(16=4^2\). Exam tip: solve mixed identities in two steps.
Why this answer is correct
The correct answer is A. (\(x^2+y^2-4\)\(x^2+y^2+4\)). First (x-4+2x-2y-2+y-4=\(x^2+y^2\)2), and then \(16=4^2\). Exam tip: solve mixed identities in two steps.
Exam Tip
पहले (x-4+2x-2y-2+y-4=\(x^2+y^2\)2), फिर \(16=4^2\) है। परीक्षा में मिश्रित पहचान को दो चरणों में हल करें।
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