Question

How do I simplify this in terms of x?

Simplify in terms of x

`((root3(x+1)-7)+7)^3-1`

Answer 1

`x`

Explanation:

First cube every term in the big bracket (cubing cancels out the cube root):
`(x + 1 - 7^3 + 7^3) - 1`
The `7^3` is cancelled out to give
`x + 1 - 1 = x`