3c^2-24c-256=

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Solution for 3c^2-24c-256= equation:


Simplifying
3c2 + -24c + -256 = 0

Reorder the terms:
-256 + -24c + 3c2 = 0

Solving
-256 + -24c + 3c2 = 0

Solving for variable 'c'.

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

Divide each side by '3'.
-85.33333333 + -8c + c2 = 0

Move the constant term to the right:

Add '85.33333333' to each side of the equation.
-85.33333333 + -8c + 85.33333333 + c2 = 0 + 85.33333333

Reorder the terms:
-85.33333333 + 85.33333333 + -8c + c2 = 0 + 85.33333333

Combine like terms: -85.33333333 + 85.33333333 = 0.00000000
0.00000000 + -8c + c2 = 0 + 85.33333333
-8c + c2 = 0 + 85.33333333

Combine like terms: 0 + 85.33333333 = 85.33333333
-8c + c2 = 85.33333333

The c term is -8c.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8c + 16 + c2 = 85.33333333 + 16

Reorder the terms:
16 + -8c + c2 = 85.33333333 + 16

Combine like terms: 85.33333333 + 16 = 101.33333333
16 + -8c + c2 = 101.33333333

Factor a perfect square on the left side:
(c + -4)(c + -4) = 101.33333333

Calculate the square root of the right side: 10.066445914

Break this problem into two subproblems by setting 
(c + -4) equal to 10.066445914 and -10.066445914.

Subproblem 1

c + -4 = 10.066445914 Simplifying c + -4 = 10.066445914 Reorder the terms: -4 + c = 10.066445914 Solving -4 + c = 10.066445914 Solving for variable 'c'. 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 = 10.066445914 + 4 Combine like terms: -4 + 4 = 0 0 + c = 10.066445914 + 4 c = 10.066445914 + 4 Combine like terms: 10.066445914 + 4 = 14.066445914 c = 14.066445914 Simplifying c = 14.066445914

Subproblem 2

c + -4 = -10.066445914 Simplifying c + -4 = -10.066445914 Reorder the terms: -4 + c = -10.066445914 Solving -4 + c = -10.066445914 Solving for variable 'c'. 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 = -10.066445914 + 4 Combine like terms: -4 + 4 = 0 0 + c = -10.066445914 + 4 c = -10.066445914 + 4 Combine like terms: -10.066445914 + 4 = -6.066445914 c = -6.066445914 Simplifying c = -6.066445914

Solution

The solution to the problem is based on the solutions from the subproblems. c = {14.066445914, -6.066445914}

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