9x^2-32x-8=0

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Solution for 9x^2-32x-8=0 equation:


Simplifying
9x2 + -32x + -8 = 0

Reorder the terms:
-8 + -32x + 9x2 = 0

Solving
-8 + -32x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
-0.8888888889 + -3.555555556x + x2 = 0

Move the constant term to the right:

Add '0.8888888889' to each side of the equation.
-0.8888888889 + -3.555555556x + 0.8888888889 + x2 = 0 + 0.8888888889

Reorder the terms:
-0.8888888889 + 0.8888888889 + -3.555555556x + x2 = 0 + 0.8888888889

Combine like terms: -0.8888888889 + 0.8888888889 = 0.0000000000
0.0000000000 + -3.555555556x + x2 = 0 + 0.8888888889
-3.555555556x + x2 = 0 + 0.8888888889

Combine like terms: 0 + 0.8888888889 = 0.8888888889
-3.555555556x + x2 = 0.8888888889

The x term is -3.555555556x.  Take half its coefficient (-1.777777778).
Square it (3.160493828) and add it to both sides.

Add '3.160493828' to each side of the equation.
-3.555555556x + 3.160493828 + x2 = 0.8888888889 + 3.160493828

Reorder the terms:
3.160493828 + -3.555555556x + x2 = 0.8888888889 + 3.160493828

Combine like terms: 0.8888888889 + 3.160493828 = 4.0493827169
3.160493828 + -3.555555556x + x2 = 4.0493827169

Factor a perfect square on the left side:
(x + -1.777777778)(x + -1.777777778) = 4.0493827169

Calculate the square root of the right side: 2.012307809

Break this problem into two subproblems by setting 
(x + -1.777777778) equal to 2.012307809 and -2.012307809.

Subproblem 1

x + -1.777777778 = 2.012307809 Simplifying x + -1.777777778 = 2.012307809 Reorder the terms: -1.777777778 + x = 2.012307809 Solving -1.777777778 + x = 2.012307809 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.777777778' to each side of the equation. -1.777777778 + 1.777777778 + x = 2.012307809 + 1.777777778 Combine like terms: -1.777777778 + 1.777777778 = 0.000000000 0.000000000 + x = 2.012307809 + 1.777777778 x = 2.012307809 + 1.777777778 Combine like terms: 2.012307809 + 1.777777778 = 3.790085587 x = 3.790085587 Simplifying x = 3.790085587

Subproblem 2

x + -1.777777778 = -2.012307809 Simplifying x + -1.777777778 = -2.012307809 Reorder the terms: -1.777777778 + x = -2.012307809 Solving -1.777777778 + x = -2.012307809 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.777777778' to each side of the equation. -1.777777778 + 1.777777778 + x = -2.012307809 + 1.777777778 Combine like terms: -1.777777778 + 1.777777778 = 0.000000000 0.000000000 + x = -2.012307809 + 1.777777778 x = -2.012307809 + 1.777777778 Combine like terms: -2.012307809 + 1.777777778 = -0.234530031 x = -0.234530031 Simplifying x = -0.234530031

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.790085587, -0.234530031}

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