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What is the correct factorised form of (x^4+2x^2y^2+y^4-16)?(x^4+2x^2y^2+y^4-16) का सही गुणनखंड रूप क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ((x^2+y^2-4)(x^2+y^2+4))((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.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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