3x^2+8x-24=0

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Solution for 3x^2+8x-24=0 equation: 


Simplifying
3x2 + 8x + -24 = 0

Reorder the terms:
-24 + 8x + 3x2 = 0

Solving
-24 + 8x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-8 + 2.666666667x + x2 = 0

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + 2.666666667x + 8 + x2 = 0 + 8

Reorder the terms:
-8 + 8 + 2.666666667x + x2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + 2.666666667x + x2 = 0 + 8
2.666666667x + x2 = 0 + 8

Combine like terms: 0 + 8 = 8
2.666666667x + x2 = 8

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 = 8 + 1.777777780

Reorder the terms:
1.777777780 + 2.666666667x + x2 = 8 + 1.777777780

Combine like terms: 8 + 1.777777780 = 9.77777778
1.777777780 + 2.666666667x + x2 = 9.77777778

Factor a perfect square on the left side:
(x + 1.333333334)(x + 1.333333334) = 9.77777778

Calculate the square root of the right side: 3.12694384

Break this problem into two subproblems by setting 
(x + 1.333333334) equal to 3.12694384 and -3.12694384.


Subproblem 1
x + 1.333333334 = 3.12694384

Simplifying
x + 1.333333334 = 3.12694384

Reorder the terms:
1.333333334 + x = 3.12694384

Solving
1.333333334 + x = 3.12694384

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 = 3.12694384 + -1.333333334

Combine like terms: 1.333333334 + -1.333333334 = 0.000000000
0.000000000 + x = 3.12694384 + -1.333333334
x = 3.12694384 + -1.333333334

Combine like terms: 3.12694384 + -1.333333334 = 1.793610506
x = 1.793610506

Simplifying
x = 1.793610506


Subproblem 2
x + 1.333333334 = -3.12694384

Simplifying
x + 1.333333334 = -3.12694384

Reorder the terms:
1.333333334 + x = -3.12694384

Solving
1.333333334 + x = -3.12694384

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 = -3.12694384 + -1.333333334

Combine like terms: 1.333333334 + -1.333333334 = 0.000000000
0.000000000 + x = -3.12694384 + -1.333333334
x = -3.12694384 + -1.333333334

Combine like terms: -3.12694384 + -1.333333334 = -4.460277174
x = -4.460277174

Simplifying
x = -4.460277174


Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {1.793610506, -4.460277174}

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