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Which is the correct factorised form of (a^2+2ab+b^2-c^2)?(a^2+2ab+b^2-c^2) का सही गुणनखंड रूप कौन सा है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ((a+b-c)(a+b+c))((a+b-c)(a+b+c))
First take (a^2+2ab+b^2=(a+b)^2), then apply difference of squares. Exam tip: apply combined identities stepwise.पहले (a^2+2ab+b^2=(a+b)^2) मानें फिर वर्गों का अंतर लगाएं। परीक्षा में मिश्रित पहचानों को क्रम से लागू करें।
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