9k^2+36k+20=0

Solution for 9k^2+36k+20=0 equation:

Simplifying
9k2 + 36k + 20 = 0

Reorder the terms:
20 + 36k + 9k2 = 0

Solving
20 + 36k + 9k2 = 0

Solving for variable 'k'.

Factor a trinomial.
(10 + 3k)(2 + 3k) = 0

Subproblem 1
Set the factor '(10 + 3k)' equal to zero and attempt to solve:

Simplifying
10 + 3k = 0

Solving
10 + 3k = 0

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

Add '-10' to each side of the equation.
10 + -10 + 3k = 0 + -10

Combine like terms: 10 + -10 = 0
0 + 3k = 0 + -10
3k = 0 + -10

Combine like terms: 0 + -10 = -10
3k = -10

Divide each side by '3'.
k = -3.333333333

Simplifying
k = -3.333333333
Subproblem 2
Set the factor '(2 + 3k)' equal to zero and attempt to solve:

Simplifying
2 + 3k = 0

Solving
2 + 3k = 0

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

Add '-2' to each side of the equation.
2 + -2 + 3k = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 3k = 0 + -2
3k = 0 + -2

Combine like terms: 0 + -2 = -2
3k = -2

Divide each side by '3'.
k = -0.6666666667

Simplifying
k = -0.6666666667
Solution
k = {-3.333333333, -0.6666666667}