9r^3=36r

Solution for 9r^3=36r equation:

Simplifying
9r3 = 36r

Solving
9r3 = 36r

Solving for variable 'r'.

Reorder the terms:
-36r + 9r3 = 36r + -36r

Combine like terms: 36r + -36r = 0
-36r + 9r3 = 0

Factor out the Greatest Common Factor (GCF), '9r'.
9r(-4 + r2) = 0

Factor a difference between two squares.
9r((2 + r)(-2 + r)) = 0

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

Simplifying
r = 0

Solving
r = 0

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

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

Simplifying
2 + r = 0

Solving
2 + r = 0

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

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

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

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

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

Simplifying
-2 + r = 0

Solving
-2 + r = 0

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

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

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

Combine like terms: 0 + 2 = 2
r = 2

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