17. If2(a2+b2)-(atb)', then show that a-b – InterviewSolution

1.

17. If2(a2+b2)-(atb)', then show that a-b

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2(a*a + b*b) = (a+b)(a+b) 2a*a + 2b*b = a*a + 2ab + b*b a*a - 2ab + b*b = 0 (a-b)(a-b) = 0 a - b = 0 a = b

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