3x^2+123=129

Solution for 3x^2+123=129 equation:

Simplifying
3x2 + 123 = 129

Reorder the terms:
123 + 3x2 = 129

Solving
123 + 3x2 = 129

Solving for variable 'x'.

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

Add '-123' to each side of the equation.
123 + -123 + 3x2 = 129 + -123

Combine like terms: 123 + -123 = 0
0 + 3x2 = 129 + -123
3x2 = 129 + -123

Combine like terms: 129 + -123 = 6
3x2 = 6

Divide each side by '3'.
x2 = 2

Simplifying
x2 = 2

Take the square root of each side:
x = {-1.414213562, 1.414213562}