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2(a^2 + b^2) = (a+b)^2 + (a-b)^2 or, 2(a^2 + b^2) = 5^2 + 2^2 = 29 So, a^2 + b^2 = 29/2
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2(a^2 + b^2) = (a+b)^2 + (a-b)^2 or, 2(a^2 + b^2) = 5^2 + 2^2 = 29 So, a^2 + b^2 = 29/2