3u^2-75=0

Solution for 3u^2-75=0 equation:

Simplifying
3u2 + -75 = 0

Reorder the terms:
-75 + 3u2 = 0

Solving
-75 + 3u2 = 0

Solving for variable 'u'.

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

Add '75' to each side of the equation.
-75 + 75 + 3u2 = 0 + 75

Combine like terms: -75 + 75 = 0
0 + 3u2 = 0 + 75
3u2 = 0 + 75

Combine like terms: 0 + 75 = 75
3u2 = 75

Divide each side by '3'.
u2 = 25

Simplifying
u2 = 25

Take the square root of each side:
u = {-5, 5}