2x^2-4=16

Solution for 2x^2-4=16 equation:

Simplifying
2x2 + -4 = 16

Reorder the terms:
-4 + 2x2 = 16

Solving
-4 + 2x2 = 16

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 = 16 + 4

Combine like terms: -4 + 4 = 0
0 + 2x2 = 16 + 4
2x2 = 16 + 4

Combine like terms: 16 + 4 = 20
2x2 = 20

Divide each side by '2'.
x2 = 10

Simplifying
x2 = 10

Take the square root of each side:
x = {-3.16227766, 3.16227766}