6x^2+6x-56=0

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Solution for 6x^2+6x-56=0 equation: 


Simplifying
6x2 + 6x + -56 = 0

Reorder the terms:
-56 + 6x + 6x2 = 0

Solving
-56 + 6x + 6x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-28 + 3x + 3x2) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(-28 + 3x + 3x2)' equal to zero and attempt to solve:

Simplifying
-28 + 3x + 3x2 = 0

Solving
-28 + 3x + 3x2 = 0

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

Divide each side by '3'.
-9.333333333 + x + x2 = 0

Move the constant term to the right:

Add '9.333333333' to each side of the equation.
-9.333333333 + x + 9.333333333 + x2 = 0 + 9.333333333

Reorder the terms:
-9.333333333 + 9.333333333 + x + x2 = 0 + 9.333333333

Combine like terms: -9.333333333 + 9.333333333 = 0.000000000
0.000000000 + x + x2 = 0 + 9.333333333
x + x2 = 0 + 9.333333333

Combine like terms: 0 + 9.333333333 = 9.333333333
x + x2 = 9.333333333

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = 9.333333333 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 9.333333333 + 0.25

Combine like terms: 9.333333333 + 0.25 = 9.583333333
1.25 + x2 = 9.583333333

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 9.583333333

Calculate the square root of the right side: 3.095695937

Break this problem into two subproblems by setting 
(x + 0.5) equal to 3.095695937 and -3.095695937.


Subproblem 1
x + 0.5 = 3.095695937

Simplifying
x + 0.5 = 3.095695937

Reorder the terms:
0.5 + x = 3.095695937

Solving
0.5 + x = 3.095695937

Solving for variable 'x'.

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

Add '-0.5' to each side of the equation.
0.5 + -0.5 + x = 3.095695937 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + x = 3.095695937 + -0.5
x = 3.095695937 + -0.5

Combine like terms: 3.095695937 + -0.5 = 2.595695937
x = 2.595695937

Simplifying
x = 2.595695937


Subproblem 2
x + 0.5 = -3.095695937

Simplifying
x + 0.5 = -3.095695937

Reorder the terms:
0.5 + x = -3.095695937

Solving
0.5 + x = -3.095695937

Solving for variable 'x'.

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

Add '-0.5' to each side of the equation.
0.5 + -0.5 + x = -3.095695937 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + x = -3.095695937 + -0.5
x = -3.095695937 + -0.5

Combine like terms: -3.095695937 + -0.5 = -3.595695937
x = -3.595695937

Simplifying
x = -3.595695937


Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {2.595695937, -3.595695937}
Solution
x = {2.595695937, -3.595695937}

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