U^2-9U+18=

Solution for U^2-9U+18= equation:

Simplifying
U2 + -9U + 18 = 0

Reorder the terms:
18 + -9U + U2 = 0

Solving
18 + -9U + U2 = 0

Solving for variable 'U'.

Factor a trinomial.
(3 + -1U)(6 + -1U) = 0

Subproblem 1
Set the factor '(3 + -1U)' equal to zero and attempt to solve:

Simplifying
3 + -1U = 0

Solving
3 + -1U = 0

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

Add '-3' to each side of the equation.
3 + -3 + -1U = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1U = 0 + -3
-1U = 0 + -3

Combine like terms: 0 + -3 = -3
-1U = -3

Divide each side by '-1'.
U = 3

Simplifying
U = 3
Subproblem 2
Set the factor '(6 + -1U)' equal to zero and attempt to solve:

Simplifying
6 + -1U = 0

Solving
6 + -1U = 0

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

Add '-6' to each side of the equation.
6 + -6 + -1U = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -1U = 0 + -6
-1U = 0 + -6

Combine like terms: 0 + -6 = -6
-1U = -6

Divide each side by '-1'.
U = 6

Simplifying
U = 6
Solution
U = {3, 6}