2x^2+9=55

Solution for 2x^2+9=55 equation:

Simplifying
2x2 + 9 = 55

Reorder the terms:
9 + 2x2 = 55

Solving
9 + 2x2 = 55

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 2x2 = 55 + -9

Combine like terms: 9 + -9 = 0
0 + 2x2 = 55 + -9
2x2 = 55 + -9

Combine like terms: 55 + -9 = 46
2x2 = 46

Divide each side by '2'.
x2 = 23

Simplifying
x2 = 23

Take the square root of each side:
x = {-4.795831523, 4.795831523}