20s^4-39s^3+18s^2=0

Solution for 20s^4-39s^3+18s^2=0 equation:

Simplifying
20s4 + -39s3 + 18s2 = 0

Reorder the terms:
18s2 + -39s3 + 20s4 = 0

Solving
18s2 + -39s3 + 20s4 = 0

Solving for variable 's'.

Factor out the Greatest Common Factor (GCF), 's2'.
s2(18 + -39s + 20s2) = 0

Factor a trinomial.
s2((3 + -4s)(6 + -5s)) = 0

Subproblem 1
Set the factor 's2' equal to zero and attempt to solve:

Simplifying
s2 = 0

Solving
s2 = 0

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

Simplifying
s2 = 0

Take the square root of each side:
s = {0}
Subproblem 2
Set the factor '(3 + -4s)' equal to zero and attempt to solve:

Simplifying
3 + -4s = 0

Solving
3 + -4s = 0

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

Add '-3' to each side of the equation.
3 + -3 + -4s = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -4s = 0 + -3
-4s = 0 + -3

Combine like terms: 0 + -3 = -3
-4s = -3

Divide each side by '-4'.
s = 0.75

Simplifying
s = 0.75
Subproblem 3
Set the factor '(6 + -5s)' equal to zero and attempt to solve:

Simplifying
6 + -5s = 0

Solving
6 + -5s = 0

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

Add '-6' to each side of the equation.
6 + -6 + -5s = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -5s = 0 + -6
-5s = 0 + -6

Combine like terms: 0 + -6 = -6
-5s = -6

Divide each side by '-5'.
s = 1.2

Simplifying
s = 1.2
Solution
s = {0, 0.75, 1.2}