=9x^2-x-32

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


Simplifying
0 = 9x2 + -1x + -32

Reorder the terms:
0 = -32 + -1x + 9x2

Solving
0 = -32 + -1x + 9x2

Solving for variable 'x'.

Combine like terms: 0 + 32 = 32
32 + x + -9x2 = -32 + -1x + 9x2 + 32 + x + -9x2

Reorder the terms:
32 + x + -9x2 = -32 + 32 + -1x + x + 9x2 + -9x2

Combine like terms: -32 + 32 = 0
32 + x + -9x2 = 0 + -1x + x + 9x2 + -9x2
32 + x + -9x2 = -1x + x + 9x2 + -9x2

Combine like terms: -1x + x = 0
32 + x + -9x2 = 0 + 9x2 + -9x2
32 + x + -9x2 = 9x2 + -9x2

Combine like terms: 9x2 + -9x2 = 0
32 + x + -9x2 = 0

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

Divide each side by '-9'.
-3.555555556 + -0.1111111111x + x2 = 0

Move the constant term to the right:

Add '3.555555556' to each side of the equation.
-3.555555556 + -0.1111111111x + 3.555555556 + x2 = 0 + 3.555555556

Reorder the terms:
-3.555555556 + 3.555555556 + -0.1111111111x + x2 = 0 + 3.555555556

Combine like terms: -3.555555556 + 3.555555556 = 0.000000000
0.000000000 + -0.1111111111x + x2 = 0 + 3.555555556
-0.1111111111x + x2 = 0 + 3.555555556

Combine like terms: 0 + 3.555555556 = 3.555555556
-0.1111111111x + x2 = 3.555555556

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-0.1111111111x + 0.25 + x2 = 3.555555556 + 0.25

Reorder the terms:
0.25 + -0.1111111111x + x2 = 3.555555556 + 0.25

Combine like terms: 3.555555556 + 0.25 = 3.805555556
0.25 + -0.1111111111x + x2 = 3.805555556

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 3.805555556

Calculate the square root of the right side: 1.950783319

Break this problem into two subproblems by setting 
(x + 0.5) equal to 1.950783319 and -1.950783319.

Subproblem 1

x + 0.5 = 1.950783319 Simplifying x + 0.5 = 1.950783319 Reorder the terms: 0.5 + x = 1.950783319 Solving 0.5 + x = 1.950783319 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.950783319 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.950783319 + -0.5 x = 1.950783319 + -0.5 Combine like terms: 1.950783319 + -0.5 = 1.450783319 x = 1.450783319 Simplifying x = 1.450783319

Subproblem 2

x + 0.5 = -1.950783319 Simplifying x + 0.5 = -1.950783319 Reorder the terms: 0.5 + x = -1.950783319 Solving 0.5 + x = -1.950783319 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.950783319 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.950783319 + -0.5 x = -1.950783319 + -0.5 Combine like terms: -1.950783319 + -0.5 = -2.450783319 x = -2.450783319 Simplifying x = -2.450783319

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.450783319, -2.450783319}

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