-2x^2+162=0

Solution for -2x^2+162=0 equation:

Simplifying
-2x2 + 162 = 0

Reorder the terms:
162 + -2x2 = 0

Solving
162 + -2x2 = 0

Solving for variable 'x'.

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

Add '-162' to each side of the equation.
162 + -162 + -2x2 = 0 + -162

Combine like terms: 162 + -162 = 0
0 + -2x2 = 0 + -162
-2x2 = 0 + -162

Combine like terms: 0 + -162 = -162
-2x2 = -162

Divide each side by '-2'.
x2 = 81

Simplifying
x2 = 81

Take the square root of each side:
x = {-9, 9}