Question

Without actually calculating the cubes. Find the value of each of the following: `(-12)^3+7^3+5^3` `(28)^3+(-15)^3+(-13)^3`

Answer 1

1)`(-12)^3+7^3+5^3`
`=3*(-12)(7)(5)`
`=-1260`
2)`(28)^3+(-15)^3+(-13)^3`
`=3*28*(-15)(-13)`
`=16380`.