2x*x-4=4

Solution for 2x*x-4=4 equation:

Simplifying
2x * x + -4 = 4

Multiply x * x
2x2 + -4 = 4

Reorder the terms:
-4 + 2x2 = 4

Solving
-4 + 2x2 = 4

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 + 2x2 = 4 + 4

Combine like terms: -4 + 4 = 0
0 + 2x2 = 4 + 4
2x2 = 4 + 4

Combine like terms: 4 + 4 = 8
2x2 = 8

Divide each side by '2'.
x2 = 4

Simplifying
x2 = 4

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