What are the solution (s) of x2-4-0?

X = 4 or X=4

X=-2 or x = 2

x=2

x=4

Step-by-step explanation:

First you add 4 on both sides

X^2=0

Then you take square on both sides

X= + - the square root of 4

Simplify that

X=plus or minus 2

The answer can be either - 2 or + 2 (which is just 2)