X^2-4=0WHATISX

Solution for X^2-4=0WHATISX equation:

Simplifying
X2 + -4 = 0WHATISX

Reorder the terms:
-4 + X2 = 0WHATISX

Anything times zero is zero.
-4 + X2 = 0AHISTWX

Solving
-4 + X2 = 0

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '4' to each side of the equation.
-4 + 4 + X2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + X2 = 0 + 4
X2 = 0 + 4

Combine like terms: 0 + 4 = 4
X2 = 4

Simplifying
X2 = 4

Take the square root of each side:
X = {-2, 2}