2x^2-4=204

Solution for 2x^2-4=204 equation:

Simplifying
2x2 + -4 = 204

Reorder the terms:
-4 + 2x2 = 204

Solving
-4 + 2x2 = 204

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 = 204 + 4

Combine like terms: -4 + 4 = 0
0 + 2x2 = 204 + 4
2x2 = 204 + 4

Combine like terms: 204 + 4 = 208
2x2 = 208

Divide each side by '2'.
x2 = 104

Simplifying
x2 = 104

Take the square root of each side:
x = {-10.198039027, 10.198039027}