4c+3=3c(c-4)

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Solution for 4c+3=3c(c-4) equation:


Simplifying
4c + 3 = 3c(c + -4)

Reorder the terms:
3 + 4c = 3c(c + -4)

Reorder the terms:
3 + 4c = 3c(-4 + c)
3 + 4c = (-4 * 3c + c * 3c)
3 + 4c = (-12c + 3c2)

Solving
3 + 4c = -12c + 3c2

Solving for variable 'c'.

Combine like terms: 4c + 12c = 16c
3 + 16c + -3c2 = -12c + 3c2 + 12c + -3c2

Reorder the terms:
3 + 16c + -3c2 = -12c + 12c + 3c2 + -3c2

Combine like terms: -12c + 12c = 0
3 + 16c + -3c2 = 0 + 3c2 + -3c2
3 + 16c + -3c2 = 3c2 + -3c2

Combine like terms: 3c2 + -3c2 = 0
3 + 16c + -3c2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-1 + -5.333333333c + c2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -5.333333333c + 1 + c2 = 0 + 1

Reorder the terms:
-1 + 1 + -5.333333333c + c2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -5.333333333c + c2 = 0 + 1
-5.333333333c + c2 = 0 + 1

Combine like terms: 0 + 1 = 1
-5.333333333c + c2 = 1

The c term is -5.333333333c.  Take half its coefficient (-2.666666667).
Square it (7.111111113) and add it to both sides.

Add '7.111111113' to each side of the equation.
-5.333333333c + 7.111111113 + c2 = 1 + 7.111111113

Reorder the terms:
7.111111113 + -5.333333333c + c2 = 1 + 7.111111113

Combine like terms: 1 + 7.111111113 = 8.111111113
7.111111113 + -5.333333333c + c2 = 8.111111113

Factor a perfect square on the left side:
(c + -2.666666667)(c + -2.666666667) = 8.111111113

Calculate the square root of the right side: 2.848001249

Break this problem into two subproblems by setting 
(c + -2.666666667) equal to 2.848001249 and -2.848001249.

Subproblem 1

c + -2.666666667 = 2.848001249 Simplifying c + -2.666666667 = 2.848001249 Reorder the terms: -2.666666667 + c = 2.848001249 Solving -2.666666667 + c = 2.848001249 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '2.666666667' to each side of the equation. -2.666666667 + 2.666666667 + c = 2.848001249 + 2.666666667 Combine like terms: -2.666666667 + 2.666666667 = 0.000000000 0.000000000 + c = 2.848001249 + 2.666666667 c = 2.848001249 + 2.666666667 Combine like terms: 2.848001249 + 2.666666667 = 5.514667916 c = 5.514667916 Simplifying c = 5.514667916

Subproblem 2

c + -2.666666667 = -2.848001249 Simplifying c + -2.666666667 = -2.848001249 Reorder the terms: -2.666666667 + c = -2.848001249 Solving -2.666666667 + c = -2.848001249 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '2.666666667' to each side of the equation. -2.666666667 + 2.666666667 + c = -2.848001249 + 2.666666667 Combine like terms: -2.666666667 + 2.666666667 = 0.000000000 0.000000000 + c = -2.848001249 + 2.666666667 c = -2.848001249 + 2.666666667 Combine like terms: -2.848001249 + 2.666666667 = -0.181334582 c = -0.181334582 Simplifying c = -0.181334582

Solution

The solution to the problem is based on the solutions from the subproblems. c = {5.514667916, -0.181334582}

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