c^2=-12-7c

Solution for c^2=-12-7c equation:

Simplifying
c2 = -12 + -7c

Solving
c2 = -12 + -7c

Solving for variable 'c'.

Reorder the terms:
12 + 7c + c2 = -12 + -7c + 12 + 7c

Reorder the terms:
12 + 7c + c2 = -12 + 12 + -7c + 7c

Combine like terms: -12 + 12 = 0
12 + 7c + c2 = 0 + -7c + 7c
12 + 7c + c2 = -7c + 7c

Combine like terms: -7c + 7c = 0
12 + 7c + c2 = 0

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

Subproblem 1
Set the factor '(4 + c)' equal to zero and attempt to solve:

Simplifying
4 + c = 0

Solving
4 + c = 0

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

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

Combine like terms: 4 + -4 = 0
0 + c = 0 + -4
c = 0 + -4

Combine like terms: 0 + -4 = -4
c = -4

Simplifying
c = -4
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 = {-4, -3}