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Relation concepts Question 8 (i) class 12 A2 b2 2ab

Ex 2.1, 7 - Let A = {1, 2}, B = {1, 2, 3, 4}, C = {5, 6}

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(a + b)2 = a2 + 2ab + b2 !! why ? theory behind the formulae !!Solved a = [2 3 -1 6 1 -2] b = [4 -5 -3 0 1 2] find ab Factorize (1-a^2) (1-b^2)+4abProve that a^-1/(a^-1 + b^-1) + a^-1/(a^-1 + b^-1) = 2b^2/(b^2.

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