18+2x^2-64=0

Solution for 18+2x^2-64=0 equation:

Simplifying
18 + 2x2 + -64 = 0

Reorder the terms:
18 + -64 + 2x2 = 0

Combine like terms: 18 + -64 = -46
-46 + 2x2 = 0

Solving
-46 + 2x2 = 0

Solving for variable 'x'.

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

Add '46' to each side of the equation.
-46 + 46 + 2x2 = 0 + 46

Combine like terms: -46 + 46 = 0
0 + 2x2 = 0 + 46
2x2 = 0 + 46

Combine like terms: 0 + 46 = 46
2x2 = 46

Divide each side by '2'.
x2 = 23

Simplifying
x2 = 23

Take the square root of each side:
x = {-4.795831523, 4.795831523}