=a^2-6a+9

Solution for =a^2-6a+9 equation:

Simplifying
0 = a2 + -6a + 9

Reorder the terms:
0 = 9 + -6a + a2

Solving
0 = 9 + -6a + a2

Solving for variable 'a'.

Combine like terms: 0 + -9 = -9
-9 + 6a + -1a2 = 9 + -6a + a2 + -9 + 6a + -1a2

Reorder the terms:
-9 + 6a + -1a2 = 9 + -9 + -6a + 6a + a2 + -1a2

Combine like terms: 9 + -9 = 0
-9 + 6a + -1a2 = 0 + -6a + 6a + a2 + -1a2
-9 + 6a + -1a2 = -6a + 6a + a2 + -1a2

Combine like terms: -6a + 6a = 0
-9 + 6a + -1a2 = 0 + a2 + -1a2
-9 + 6a + -1a2 = a2 + -1a2

Combine like terms: a2 + -1a2 = 0
-9 + 6a + -1a2 = 0

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

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

Simplifying
-3 + a = 0

Solving
-3 + a = 0

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

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

Combine like terms: -3 + 3 = 0
0 + a = 0 + 3
a = 0 + 3

Combine like terms: 0 + 3 = 3
a = 3

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

Simplifying
3 + -1a = 0

Solving
3 + -1a = 0

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

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

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

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

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

Simplifying
a = 3
Solution
a = {3, 3}