3x^2+69=78

Solution for 3x^2+69=78 equation:

Simplifying
3x2 + 69 = 78

Reorder the terms:
69 + 3x2 = 78

Solving
69 + 3x2 = 78

Solving for variable 'x'.

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

Add '-69' to each side of the equation.
69 + -69 + 3x2 = 78 + -69

Combine like terms: 69 + -69 = 0
0 + 3x2 = 78 + -69
3x2 = 78 + -69

Combine like terms: 78 + -69 = 9
3x2 = 9

Divide each side by '3'.
x2 = 3

Simplifying
x2 = 3

Take the square root of each side:
x = {-1.732050808, 1.732050808}