2x^2+13-99=0

Solution for 2x^2+13-99=0 equation:

Simplifying
2x2 + 13 + -99 = 0

Reorder the terms:
13 + -99 + 2x2 = 0

Combine like terms: 13 + -99 = -86
-86 + 2x2 = 0

Solving
-86 + 2x2 = 0

Solving for variable 'x'.

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

Add '86' to each side of the equation.
-86 + 86 + 2x2 = 0 + 86

Combine like terms: -86 + 86 = 0
0 + 2x2 = 0 + 86
2x2 = 0 + 86

Combine like terms: 0 + 86 = 86
2x2 = 86

Divide each side by '2'.
x2 = 43

Simplifying
x2 = 43

Take the square root of each side:
x = {-6.557438524, 6.557438524}