[ .6 x .6 x .6 x .4 x .4 x .4 + 3 x .6 x .4 x (.6 + .4 )] =?

Question

Accepted Answer

Given expression =(.6)3 + (.4) 3 + 3 x .6 x .4 x (.6 + .4) = a3 + b3 + 3ab (a+b) = (a+b)3 = (.6 + .4)3 = 13 = 1

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