3u^2-27=0

Solution for 3u^2-27=0 equation:

Simplifying
3u2 + -27 = 0

Reorder the terms:
-27 + 3u2 = 0

Solving
-27 + 3u2 = 0

Solving for variable 'u'.

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

Add '27' to each side of the equation.
-27 + 27 + 3u2 = 0 + 27

Combine like terms: -27 + 27 = 0
0 + 3u2 = 0 + 27
3u2 = 0 + 27

Combine like terms: 0 + 27 = 27
3u2 = 27

Divide each side by '3'.
u2 = 9

Simplifying
u2 = 9

Take the square root of each side:
u = {-3, 3}