3u^2-57=0

Solution for 3u^2-57=0 equation:

Simplifying
3u2 + -57 = 0

Reorder the terms:
-57 + 3u2 = 0

Solving
-57 + 3u2 = 0

Solving for variable 'u'.

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

Add '57' to each side of the equation.
-57 + 57 + 3u2 = 0 + 57

Combine like terms: -57 + 57 = 0
0 + 3u2 = 0 + 57
3u2 = 0 + 57

Combine like terms: 0 + 57 = 57
3u2 = 57

Divide each side by '3'.
u2 = 19

Simplifying
u2 = 19

Take the square root of each side:
u = {-4.358898944, 4.358898944}