x+(x+2)+(3x(x+2))=96

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Solution for x+(x+2)+(3x(x+2))=96 equation:


Simplifying
x + (x + 2) + (3x(x + 2)) = 96

Reorder the terms:
x + (2 + x) + (3x(x + 2)) = 96

Remove parenthesis around (2 + x)
x + 2 + x + (3x(x + 2)) = 96

Reorder the terms:
x + 2 + x + (3x(2 + x)) = 96
x + 2 + x + ((2 * 3x + x * 3x)) = 96
x + 2 + x + ((6x + 3x2)) = 96
x + 2 + x + (6x + 3x2) = 96

Remove parenthesis around (6x + 3x2)
x + 2 + x + 6x + 3x2 = 96

Reorder the terms:
2 + x + x + 6x + 3x2 = 96

Combine like terms: x + x = 2x
2 + 2x + 6x + 3x2 = 96

Combine like terms: 2x + 6x = 8x
2 + 8x + 3x2 = 96

Solving
2 + 8x + 3x2 = 96

Solving for variable 'x'.

Reorder the terms:
2 + -96 + 8x + 3x2 = 96 + -96

Combine like terms: 2 + -96 = -94
-94 + 8x + 3x2 = 96 + -96

Combine like terms: 96 + -96 = 0
-94 + 8x + 3x2 = 0

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

Divide each side by '3'.
-31.33333333 + 2.666666667x + x2 = 0

Move the constant term to the right:

Add '31.33333333' to each side of the equation.
-31.33333333 + 2.666666667x + 31.33333333 + x2 = 0 + 31.33333333

Reorder the terms:
-31.33333333 + 31.33333333 + 2.666666667x + x2 = 0 + 31.33333333

Combine like terms: -31.33333333 + 31.33333333 = 0.00000000
0.00000000 + 2.666666667x + x2 = 0 + 31.33333333
2.666666667x + x2 = 0 + 31.33333333

Combine like terms: 0 + 31.33333333 = 31.33333333
2.666666667x + x2 = 31.33333333

The x term is 2.666666667x.  Take half its coefficient (1.333333334).
Square it (1.777777780) and add it to both sides.

Add '1.777777780' to each side of the equation.
2.666666667x + 1.777777780 + x2 = 31.33333333 + 1.777777780

Reorder the terms:
1.777777780 + 2.666666667x + x2 = 31.33333333 + 1.777777780

Combine like terms: 31.33333333 + 1.777777780 = 33.11111111
1.777777780 + 2.666666667x + x2 = 33.11111111

Factor a perfect square on the left side:
(x + 1.333333334)(x + 1.333333334) = 33.11111111

Calculate the square root of the right side: 5.7542255

Break this problem into two subproblems by setting 
(x + 1.333333334) equal to 5.7542255 and -5.7542255.

Subproblem 1

x + 1.333333334 = 5.7542255 Simplifying x + 1.333333334 = 5.7542255 Reorder the terms: 1.333333334 + x = 5.7542255 Solving 1.333333334 + x = 5.7542255 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.333333334' to each side of the equation. 1.333333334 + -1.333333334 + x = 5.7542255 + -1.333333334 Combine like terms: 1.333333334 + -1.333333334 = 0.000000000 0.000000000 + x = 5.7542255 + -1.333333334 x = 5.7542255 + -1.333333334 Combine like terms: 5.7542255 + -1.333333334 = 4.420892166 x = 4.420892166 Simplifying x = 4.420892166

Subproblem 2

x + 1.333333334 = -5.7542255 Simplifying x + 1.333333334 = -5.7542255 Reorder the terms: 1.333333334 + x = -5.7542255 Solving 1.333333334 + x = -5.7542255 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.333333334' to each side of the equation. 1.333333334 + -1.333333334 + x = -5.7542255 + -1.333333334 Combine like terms: 1.333333334 + -1.333333334 = 0.000000000 0.000000000 + x = -5.7542255 + -1.333333334 x = -5.7542255 + -1.333333334 Combine like terms: -5.7542255 + -1.333333334 = -7.087558834 x = -7.087558834 Simplifying x = -7.087558834

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.420892166, -7.087558834}

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