2x^2-15=147

Solution for 2x^2-15=147 equation:

Simplifying
2x2 + -15 = 147

Reorder the terms:
-15 + 2x2 = 147

Solving
-15 + 2x2 = 147

Solving for variable 'x'.

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

Add '15' to each side of the equation.
-15 + 15 + 2x2 = 147 + 15

Combine like terms: -15 + 15 = 0
0 + 2x2 = 147 + 15
2x2 = 147 + 15

Combine like terms: 147 + 15 = 162
2x2 = 162

Divide each side by '2'.
x2 = 81

Simplifying
x2 = 81

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