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16 July, 06:32

How is (x-y) ^2 + (X^2+2xy+y^2) simplified to 2x^2+2y^2?

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  1. 16 July, 06:48
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    Solve using identities (x-y) ² when opened becomes x²-2xy+y² now add second equation amd tou will get the ans
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