#1**+1 **

Note that (1/8)^(-1) = 8

So

(x - 4)^3 = 8 take the cube root of each side

x - 4 = (8)^(1/3)

x - 4 = 2 add 4 to both sides

x = 6

CPhill Apr 21, 2019

#2**-1 **

First figure out the right hand side.

1/8 to the power of -1 is the same thing as 8. Now, (x-4)^3 = 8

After this, get the cube root to the other side(you know what I mean) to get x-4 = 2.

Add 4 to both sides to get x = 6.

**X is 6.**

~~Hypotenuisance

Hypotenuisance Apr 21, 2019