25u^2-9=0

Solution for 25u^2-9=0 equation:

Simplifying
25u2 + -9 = 0

Reorder the terms:
-9 + 25u2 = 0

Solving
-9 + 25u2 = 0

Solving for variable 'u'.

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

Add '9' to each side of the equation.
-9 + 9 + 25u2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 25u2 = 0 + 9
25u2 = 0 + 9

Combine like terms: 0 + 9 = 9
25u2 = 9

Divide each side by '25'.
u2 = 0.36

Simplifying
u2 = 0.36

Take the square root of each side:
u = {-0.6, 0.6}