Question

With out calculating the cube find (-28)³+(9)³+(19)³

Answer 1

we know that if a+b+c = 0 then a^3 + b^3 + c^3 = 3abc
Now, -28+9+19
-19+19 = 0
Therefore, (-28)^3 + (9)^3 + (19)^3 = 3(-28)(9)(19) = -14364 is your answer