2x^2-27=81

Solution for 2x^2-27=81 equation:

Simplifying
2x2 + -27 = 81

Reorder the terms:
-27 + 2x2 = 81

Solving
-27 + 2x2 = 81

Solving for variable 'x'.

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

Add '27' to each side of the equation.
-27 + 27 + 2x2 = 81 + 27

Combine like terms: -27 + 27 = 0
0 + 2x2 = 81 + 27
2x2 = 81 + 27

Combine like terms: 81 + 27 = 108
2x2 = 108

Divide each side by '2'.
x2 = 54

Simplifying
x2 = 54

Take the square root of each side:
x = {-7.348469228, 7.348469228}