81x^2-36x=

Solution for 81x^2-36x= equation:

Simplifying
81x2 + -36x = 0

Reorder the terms:
-36x + 81x2 = 0

Solving
-36x + 81x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '9x'.
9x(-4 + 9x) = 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 '(-4 + 9x)' equal to zero and attempt to solve:

Simplifying
-4 + 9x = 0

Solving
-4 + 9x = 0

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

Add '4' to each side of the equation.
-4 + 4 + 9x = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 9x = 0 + 4
9x = 0 + 4

Combine like terms: 0 + 4 = 4
9x = 4

Divide each side by '9'.
x = 0.4444444444

Simplifying
x = 0.4444444444
Solution
x = {0, 0.4444444444}