(6x+8)=(3x^2-6x-5)

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Solution for (6x+8)=(3x^2-6x-5) equation:


Simplifying
(6x + 8) = (3x2 + -6x + -5)

Reorder the terms:
(8 + 6x) = (3x2 + -6x + -5)

Remove parenthesis around (8 + 6x)
8 + 6x = (3x2 + -6x + -5)

Reorder the terms:
8 + 6x = (-5 + -6x + 3x2)

Remove parenthesis around (-5 + -6x + 3x2)
8 + 6x = -5 + -6x + 3x2

Solving
8 + 6x = -5 + -6x + 3x2

Solving for variable 'x'.

Reorder the terms:
8 + 5 + 6x + 6x + -3x2 = -5 + -6x + 3x2 + 5 + 6x + -3x2

Combine like terms: 8 + 5 = 13
13 + 6x + 6x + -3x2 = -5 + -6x + 3x2 + 5 + 6x + -3x2

Combine like terms: 6x + 6x = 12x
13 + 12x + -3x2 = -5 + -6x + 3x2 + 5 + 6x + -3x2

Reorder the terms:
13 + 12x + -3x2 = -5 + 5 + -6x + 6x + 3x2 + -3x2

Combine like terms: -5 + 5 = 0
13 + 12x + -3x2 = 0 + -6x + 6x + 3x2 + -3x2
13 + 12x + -3x2 = -6x + 6x + 3x2 + -3x2

Combine like terms: -6x + 6x = 0
13 + 12x + -3x2 = 0 + 3x2 + -3x2
13 + 12x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
13 + 12x + -3x2 = 0

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

Divide each side by '-3'.
-4.333333333 + -4x + x2 = 0

Move the constant term to the right:

Add '4.333333333' to each side of the equation.
-4.333333333 + -4x + 4.333333333 + x2 = 0 + 4.333333333

Reorder the terms:
-4.333333333 + 4.333333333 + -4x + x2 = 0 + 4.333333333

Combine like terms: -4.333333333 + 4.333333333 = 0.000000000
0.000000000 + -4x + x2 = 0 + 4.333333333
-4x + x2 = 0 + 4.333333333

Combine like terms: 0 + 4.333333333 = 4.333333333
-4x + x2 = 4.333333333

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 = 4.333333333 + 4

Reorder the terms:
4 + -4x + x2 = 4.333333333 + 4

Combine like terms: 4.333333333 + 4 = 8.333333333
4 + -4x + x2 = 8.333333333

Factor a perfect square on the left side:
(x + -2)(x + -2) = 8.333333333

Calculate the square root of the right side: 2.886751346

Break this problem into two subproblems by setting 
(x + -2) equal to 2.886751346 and -2.886751346.

Subproblem 1

x + -2 = 2.886751346 Simplifying x + -2 = 2.886751346 Reorder the terms: -2 + x = 2.886751346 Solving -2 + x = 2.886751346 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 = 2.886751346 + 2 Combine like terms: -2 + 2 = 0 0 + x = 2.886751346 + 2 x = 2.886751346 + 2 Combine like terms: 2.886751346 + 2 = 4.886751346 x = 4.886751346 Simplifying x = 4.886751346

Subproblem 2

x + -2 = -2.886751346 Simplifying x + -2 = -2.886751346 Reorder the terms: -2 + x = -2.886751346 Solving -2 + x = -2.886751346 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 = -2.886751346 + 2 Combine like terms: -2 + 2 = 0 0 + x = -2.886751346 + 2 x = -2.886751346 + 2 Combine like terms: -2.886751346 + 2 = -0.886751346 x = -0.886751346 Simplifying x = -0.886751346

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.886751346, -0.886751346}

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