25-9u^2=0

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

Simplifying
25 + -9u2 = 0

Solving
25 + -9u2 = 0

Solving for variable 'u'.

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

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

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

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

Divide each side by '-9'.
u2 = 2.777777778

Simplifying
u2 = 2.777777778

Take the square root of each side:
u = {-1.666666667, 1.666666667}