Question

1. without actually calculating the cubes, find (-11)^3 + (7)^3 + 4^3.​

Answer 1

Step-by-step explanation:

if a + b + c = 0, then a³+b³+c³=3abc

so, -11+ 7+ 4 =0

-11+11=0

0=0

(-11)^3 + (7)^3 + 4^3 =3(-11)(7)(4)

                                = -924