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12*(a*(b*c)) - c^3 %2B a^3 %2B 64*b^3

Answer»

a^3 + 64^3 - c^3 + 12abc

Using formulaa^3+b^3+c^3–3abc = (a+b+c)(a^2 + b^2 + c^2–ab–bc–ca)

= (a)^3 + (4b)^3 + (-c)^3 - 3(a)*(4b)*(-c)

= a^2 + 16b^2 + c^2 - 4ab + 4bc + ac


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