3u^2-72=0

Solution for 3u^2-72=0 equation:

Simplifying
3u2 + -72 = 0

Reorder the terms:
-72 + 3u2 = 0

Solving
-72 + 3u2 = 0

Solving for variable 'u'.

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

Add '72' to each side of the equation.
-72 + 72 + 3u2 = 0 + 72

Combine like terms: -72 + 72 = 0
0 + 3u2 = 0 + 72
3u2 = 0 + 72

Combine like terms: 0 + 72 = 72
3u2 = 72

Divide each side by '3'.
u2 = 24

Simplifying
u2 = 24

Take the square root of each side:
u = {-4.898979486, 4.898979486}