What is the area of the square with a side length of x-4x−4 ?

Answer 1

x- 4x - 4?

or did you mean to write x^2 -4x - 4? which equals (x-2)^2.

if so, then the area = [(x-2)^2]^2

or maybe you meant to write x^2-4x-4 = the area and what is the side?

if so, the side is the square root of x^2-4x-4, which equals x-2

odds are you mis-copied the problem. have a typo, or left out some information.