(a %2B b)^2=b^2 %2B a^2 %2B 2*(a*b) – InterviewSolution

1.	(a %2B b)^2=b^2 %2B a^2 %2B 2(ab)
Answer» (a+b)^2=(a+b)(a+b)=a^2+b^2+ab+ab=a^2+b^2+2ab

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