2x^2+5=86

Solution for 2x^2+5=86 equation:

Simplifying
2x2 + 5 = 86

Reorder the terms:
5 + 2x2 = 86

Solving
5 + 2x2 = 86

Solving for variable 'x'.

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

Add '-5' to each side of the equation.
5 + -5 + 2x2 = 86 + -5

Combine like terms: 5 + -5 = 0
0 + 2x2 = 86 + -5
2x2 = 86 + -5

Combine like terms: 86 + -5 = 81
2x2 = 81

Divide each side by '2'.
x2 = 40.5

Simplifying
x2 = 40.5

Take the square root of each side:
x = {-6.363961031, 6.363961031}