0=3x^2+4x-96

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Solution for 0=3x^2+4x-96 equation:


Simplifying
0 = 3x2 + 4x + -96

Reorder the terms:
0 = -96 + 4x + 3x2

Solving
0 = -96 + 4x + 3x2

Solving for variable 'x'.

Combine like terms: 0 + 96 = 96
96 + -4x + -3x2 = -96 + 4x + 3x2 + 96 + -4x + -3x2

Reorder the terms:
96 + -4x + -3x2 = -96 + 96 + 4x + -4x + 3x2 + -3x2

Combine like terms: -96 + 96 = 0
96 + -4x + -3x2 = 0 + 4x + -4x + 3x2 + -3x2
96 + -4x + -3x2 = 4x + -4x + 3x2 + -3x2

Combine like terms: 4x + -4x = 0
96 + -4x + -3x2 = 0 + 3x2 + -3x2
96 + -4x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
96 + -4x + -3x2 = 0

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

Divide each side by '-3'.
-32 + 1.333333333x + x2 = 0

Move the constant term to the right:

Add '32' to each side of the equation.
-32 + 1.333333333x + 32 + x2 = 0 + 32

Reorder the terms:
-32 + 32 + 1.333333333x + x2 = 0 + 32

Combine like terms: -32 + 32 = 0
0 + 1.333333333x + x2 = 0 + 32
1.333333333x + x2 = 0 + 32

Combine like terms: 0 + 32 = 32
1.333333333x + x2 = 32

The x term is 1.333333333x.  Take half its coefficient (0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
1.333333333x + 0.4444444442 + x2 = 32 + 0.4444444442

Reorder the terms:
0.4444444442 + 1.333333333x + x2 = 32 + 0.4444444442

Combine like terms: 32 + 0.4444444442 = 32.4444444442
0.4444444442 + 1.333333333x + x2 = 32.4444444442

Factor a perfect square on the left side:
(x + 0.6666666665)(x + 0.6666666665) = 32.4444444442

Calculate the square root of the right side: 5.696002497

Break this problem into two subproblems by setting 
(x + 0.6666666665) equal to 5.696002497 and -5.696002497.

Subproblem 1

x + 0.6666666665 = 5.696002497 Simplifying x + 0.6666666665 = 5.696002497 Reorder the terms: 0.6666666665 + x = 5.696002497 Solving 0.6666666665 + x = 5.696002497 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + x = 5.696002497 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + x = 5.696002497 + -0.6666666665 x = 5.696002497 + -0.6666666665 Combine like terms: 5.696002497 + -0.6666666665 = 5.0293358305 x = 5.0293358305 Simplifying x = 5.0293358305

Subproblem 2

x + 0.6666666665 = -5.696002497 Simplifying x + 0.6666666665 = -5.696002497 Reorder the terms: 0.6666666665 + x = -5.696002497 Solving 0.6666666665 + x = -5.696002497 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + x = -5.696002497 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + x = -5.696002497 + -0.6666666665 x = -5.696002497 + -0.6666666665 Combine like terms: -5.696002497 + -0.6666666665 = -6.3626691635 x = -6.3626691635 Simplifying x = -6.3626691635

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.0293358305, -6.3626691635}

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