-4a+18a*a=

Solution for -4a+18a*a= equation:

Simplifying
-4a + 18a * a = 0

Multiply a * a
-4a + 18a2 = 0

Solving
-4a + 18a2 = 0

Solving for variable 'a'.

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

Ignore the factor 2.
Subproblem 1
Set the factor 'a' equal to zero and attempt to solve:

Simplifying
a = 0

Solving
a = 0

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

Simplifying
a = 0
Subproblem 2
Set the factor '(-2 + 9a)' equal to zero and attempt to solve:

Simplifying
-2 + 9a = 0

Solving
-2 + 9a = 0

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

Add '2' to each side of the equation.
-2 + 2 + 9a = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 9a = 0 + 2
9a = 0 + 2

Combine like terms: 0 + 2 = 2
9a = 2

Divide each side by '9'.
a = 0.2222222222

Simplifying
a = 0.2222222222
Solution
a = {0, 0.2222222222}