25c^2+30c+9=0

Solution for 25c^2+30c+9=0 equation:

Simplifying
25c2 + 30c + 9 = 0

Reorder the terms:
9 + 30c + 25c2 = 0

Solving
9 + 30c + 25c2 = 0

Solving for variable 'c'.

Factor a trinomial.
(3 + 5c)(3 + 5c) = 0

Subproblem 1
Set the factor '(3 + 5c)' equal to zero and attempt to solve:

Simplifying
3 + 5c = 0

Solving
3 + 5c = 0

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

Add '-3' to each side of the equation.
3 + -3 + 5c = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 5c = 0 + -3
5c = 0 + -3

Combine like terms: 0 + -3 = -3
5c = -3

Divide each side by '5'.
c = -0.6

Simplifying
c = -0.6
Subproblem 2
Set the factor '(3 + 5c)' equal to zero and attempt to solve:

Simplifying
3 + 5c = 0

Solving
3 + 5c = 0

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

Add '-3' to each side of the equation.
3 + -3 + 5c = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 5c = 0 + -3
5c = 0 + -3

Combine like terms: 0 + -3 = -3
5c = -3

Divide each side by '5'.
c = -0.6

Simplifying
c = -0.6
Solution
c = {-0.6, -0.6}