x=2(3)(5+7) x=6(5+7) x=30+42 x=72
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V = a3 where a is the length of one edge.
a3*b3 = a3b3
(a+b)3=a3+b3+3ab(a+b) a3+b3=(a+b)3-3ab(a+b) a3+b3=(a+b)(a2-ab+b2)
Consider a binomial (a+b). The cube of the binomial is given as =(a+b)3 =a3 + 3a2b + 3ab2 + b3.
A3+b3