c^2+6c=-3

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Solution for c^2+6c=-3 equation:


Simplifying
c2 + 6c = -3

Reorder the terms:
6c + c2 = -3

Solving
6c + c2 = -3

Solving for variable 'c'.

Reorder the terms:
3 + 6c + c2 = -3 + 3

Combine like terms: -3 + 3 = 0
3 + 6c + c2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + 6c + -3 + c2 = 0 + -3

Reorder the terms:
3 + -3 + 6c + c2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 6c + c2 = 0 + -3
6c + c2 = 0 + -3

Combine like terms: 0 + -3 = -3
6c + c2 = -3

The c term is 6c.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6c + 9 + c2 = -3 + 9

Reorder the terms:
9 + 6c + c2 = -3 + 9

Combine like terms: -3 + 9 = 6
9 + 6c + c2 = 6

Factor a perfect square on the left side:
(c + 3)(c + 3) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(c + 3) equal to 2.449489743 and -2.449489743.

Subproblem 1

c + 3 = 2.449489743 Simplifying c + 3 = 2.449489743 Reorder the terms: 3 + c = 2.449489743 Solving 3 + c = 2.449489743 Solving for variable 'c'. 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 = 2.449489743 + -3 Combine like terms: 3 + -3 = 0 0 + c = 2.449489743 + -3 c = 2.449489743 + -3 Combine like terms: 2.449489743 + -3 = -0.550510257 c = -0.550510257 Simplifying c = -0.550510257

Subproblem 2

c + 3 = -2.449489743 Simplifying c + 3 = -2.449489743 Reorder the terms: 3 + c = -2.449489743 Solving 3 + c = -2.449489743 Solving for variable 'c'. 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 = -2.449489743 + -3 Combine like terms: 3 + -3 = 0 0 + c = -2.449489743 + -3 c = -2.449489743 + -3 Combine like terms: -2.449489743 + -3 = -5.449489743 c = -5.449489743 Simplifying c = -5.449489743

Solution

The solution to the problem is based on the solutions from the subproblems. c = {-0.550510257, -5.449489743}

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