Using the identity (x+y)2+(x−y)2=2(x2+y2) Compute the value of 42+22 – InterviewSolution

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Using the identity (x+y)2+(x−y)2=2(x2+y2) Compute the value of 42+22

Answer»

Using the identity $(x + y)^{2} + (x - y)^{2} = 2 (x^{2} + y^{2})$

Compute the value of $4^{2} + 2^{2}$

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