9u^2=18u

Solution for 9u^2=18u equation:

Simplifying
9u2 = 18u

Solving
9u2 = 18u

Solving for variable 'u'.

Reorder the terms:
-18u + 9u2 = 18u + -18u

Combine like terms: 18u + -18u = 0
-18u + 9u2 = 0

Factor out the Greatest Common Factor (GCF), '9u'.
9u(-2 + u) = 0

Ignore the factor 9.
Subproblem 1
Set the factor 'u' equal to zero and attempt to solve:

Simplifying
u = 0

Solving
u = 0

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

Simplifying
u = 0
Subproblem 2
Set the factor '(-2 + u)' equal to zero and attempt to solve:

Simplifying
-2 + u = 0

Solving
-2 + u = 0

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

Add '2' to each side of the equation.
-2 + 2 + u = 0 + 2

Combine like terms: -2 + 2 = 0
0 + u = 0 + 2
u = 0 + 2

Combine like terms: 0 + 2 = 2
u = 2

Simplifying
u = 2
Solution
u = {0, 2}