5x^2+9x-32=0

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Solution for 5x^2+9x-32=0 equation:


Simplifying
5x2 + 9x + -32 = 0

Reorder the terms:
-32 + 9x + 5x2 = 0

Solving
-32 + 9x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-6.4 + 1.8x + x2 = 0

Move the constant term to the right:

Add '6.4' to each side of the equation.
-6.4 + 1.8x + 6.4 + x2 = 0 + 6.4

Reorder the terms:
-6.4 + 6.4 + 1.8x + x2 = 0 + 6.4

Combine like terms: -6.4 + 6.4 = 0.0
0.0 + 1.8x + x2 = 0 + 6.4
1.8x + x2 = 0 + 6.4

Combine like terms: 0 + 6.4 = 6.4
1.8x + x2 = 6.4

The x term is 1.8x.  Take half its coefficient (0.9).
Square it (0.81) and add it to both sides.

Add '0.81' to each side of the equation.
1.8x + 0.81 + x2 = 6.4 + 0.81

Reorder the terms:
0.81 + 1.8x + x2 = 6.4 + 0.81

Combine like terms: 6.4 + 0.81 = 7.21
0.81 + 1.8x + x2 = 7.21

Factor a perfect square on the left side:
(x + 0.9)(x + 0.9) = 7.21

Calculate the square root of the right side: 2.685144316

Break this problem into two subproblems by setting 
(x + 0.9) equal to 2.685144316 and -2.685144316.

Subproblem 1

x + 0.9 = 2.685144316 Simplifying x + 0.9 = 2.685144316 Reorder the terms: 0.9 + x = 2.685144316 Solving 0.9 + x = 2.685144316 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.9' to each side of the equation. 0.9 + -0.9 + x = 2.685144316 + -0.9 Combine like terms: 0.9 + -0.9 = 0.0 0.0 + x = 2.685144316 + -0.9 x = 2.685144316 + -0.9 Combine like terms: 2.685144316 + -0.9 = 1.785144316 x = 1.785144316 Simplifying x = 1.785144316

Subproblem 2

x + 0.9 = -2.685144316 Simplifying x + 0.9 = -2.685144316 Reorder the terms: 0.9 + x = -2.685144316 Solving 0.9 + x = -2.685144316 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.9' to each side of the equation. 0.9 + -0.9 + x = -2.685144316 + -0.9 Combine like terms: 0.9 + -0.9 = 0.0 0.0 + x = -2.685144316 + -0.9 x = -2.685144316 + -0.9 Combine like terms: -2.685144316 + -0.9 = -3.585144316 x = -3.585144316 Simplifying x = -3.585144316

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.785144316, -3.585144316}

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