3x^2-12-288=0

Solution for 3x^2-12-288=0 equation:

Simplifying
3x2 + -12 + -288 = 0

Reorder the terms:
-12 + -288 + 3x2 = 0

Combine like terms: -12 + -288 = -300
-300 + 3x2 = 0

Solving
-300 + 3x2 = 0

Solving for variable 'x'.

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

Add '300' to each side of the equation.
-300 + 300 + 3x2 = 0 + 300

Combine like terms: -300 + 300 = 0
0 + 3x2 = 0 + 300
3x2 = 0 + 300

Combine like terms: 0 + 300 = 300
3x2 = 300

Divide each side by '3'.
x2 = 100

Simplifying
x2 = 100

Take the square root of each side:
x = {-10, 10}