(6+2x)(3+3x)=8

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Solution for (6+2x)(3+3x)=8 equation: 


Simplifying
(6 + 2x)(3 + 3x) = 8

Multiply (6 + 2x) * (3 + 3x)
(6(3 + 3x) + 2x * (3 + 3x)) = 8
((3 * 6 + 3x * 6) + 2x * (3 + 3x)) = 8
((18 + 18x) + 2x * (3 + 3x)) = 8
(18 + 18x + (3 * 2x + 3x * 2x)) = 8
(18 + 18x + (6x + 6x2)) = 8

Combine like terms: 18x + 6x = 24x
(18 + 24x + 6x2) = 8

Solving
18 + 24x + 6x2 = 8

Solving for variable 'x'.

Reorder the terms:
18 + -8 + 24x + 6x2 = 8 + -8

Combine like terms: 18 + -8 = 10
10 + 24x + 6x2 = 8 + -8

Combine like terms: 8 + -8 = 0
10 + 24x + 6x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(5 + 12x + 3x2) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(5 + 12x + 3x2)' equal to zero and attempt to solve:

Simplifying
5 + 12x + 3x2 = 0

Solving
5 + 12x + 3x2 = 0

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

Divide each side by '3'.
1.666666667 + 4x + x2 = 0

Move the constant term to the right:

Add '-1.666666667' to each side of the equation.
1.666666667 + 4x + -1.666666667 + x2 = 0 + -1.666666667

Reorder the terms:
1.666666667 + -1.666666667 + 4x + x2 = 0 + -1.666666667

Combine like terms: 1.666666667 + -1.666666667 = 0.000000000
0.000000000 + 4x + x2 = 0 + -1.666666667
4x + x2 = 0 + -1.666666667

Combine like terms: 0 + -1.666666667 = -1.666666667
4x + x2 = -1.666666667

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = -1.666666667 + 4

Reorder the terms:
4 + 4x + x2 = -1.666666667 + 4

Combine like terms: -1.666666667 + 4 = 2.333333333
4 + 4x + x2 = 2.333333333

Factor a perfect square on the left side:
(x + 2)(x + 2) = 2.333333333

Calculate the square root of the right side: 1.527525232

Break this problem into two subproblems by setting 
(x + 2) equal to 1.527525232 and -1.527525232.


Subproblem 1
x + 2 = 1.527525232

Simplifying
x + 2 = 1.527525232

Reorder the terms:
2 + x = 1.527525232

Solving
2 + x = 1.527525232

Solving for variable 'x'.

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

Add '-2' to each side of the equation.
2 + -2 + x = 1.527525232 + -2

Combine like terms: 2 + -2 = 0
0 + x = 1.527525232 + -2
x = 1.527525232 + -2

Combine like terms: 1.527525232 + -2 = -0.472474768
x = -0.472474768

Simplifying
x = -0.472474768


Subproblem 2
x + 2 = -1.527525232

Simplifying
x + 2 = -1.527525232

Reorder the terms:
2 + x = -1.527525232

Solving
2 + x = -1.527525232

Solving for variable 'x'.

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

Add '-2' to each side of the equation.
2 + -2 + x = -1.527525232 + -2

Combine like terms: 2 + -2 = 0
0 + x = -1.527525232 + -2
x = -1.527525232 + -2

Combine like terms: -1.527525232 + -2 = -3.527525232
x = -3.527525232

Simplifying
x = -3.527525232


Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {-0.472474768, -3.527525232}
Solution
x = {-0.472474768, -3.527525232}

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