-4c^2-12c=0

Solution for -4c^2-12c=0 equation:

Simplifying
-4c2 + -12c = 0

Reorder the terms:
-12c + -4c2 = 0

Solving
-12c + -4c2 = 0

Solving for variable 'c'.

Factor out the Greatest Common Factor (GCF), '-4c'.
-4c(3 + c) = 0

Ignore the factor -4.
Subproblem 1
Set the factor 'c' equal to zero and attempt to solve:

Simplifying
c = 0

Solving
c = 0

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

Simplifying
c = 0
Subproblem 2
Set the factor '(3 + c)' equal to zero and attempt to solve:

Simplifying
3 + c = 0

Solving
3 + c = 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 + c = 0 + -3

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

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

Simplifying
c = -3
Solution
c = {0, -3}