9x^2=-18x

Solution for 9x^2=-18x equation:

Simplifying
9x2 = -18x

Solving
9x2 = -18x

Solving for variable 'x'.

Reorder the terms:
18x + 9x2 = -18x + 18x

Combine like terms: -18x + 18x = 0
18x + 9x2 = 0

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

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

Simplifying
x = 0

Solving
x = 0

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

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

Simplifying
2 + x = 0

Solving
2 + x = 0

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

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

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

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

Simplifying
x = -2
Solution
x = {0, -2}