3u^2-108=0

Solution for 3u^2-108=0 equation:

Simplifying
3u2 + -108 = 0

Reorder the terms:
-108 + 3u2 = 0

Solving
-108 + 3u2 = 0

Solving for variable 'u'.

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

Add '108' to each side of the equation.
-108 + 108 + 3u2 = 0 + 108

Combine like terms: -108 + 108 = 0
0 + 3u2 = 0 + 108
3u2 = 0 + 108

Combine like terms: 0 + 108 = 108
3u2 = 108

Divide each side by '3'.
u2 = 36

Simplifying
u2 = 36

Take the square root of each side:
u = {-6, 6}