0=5x^2+57x-32

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Solution for 0=5x^2+57x-32 equation:


Simplifying
0 = 5x2 + 57x + -32

Reorder the terms:
0 = -32 + 57x + 5x2

Solving
0 = -32 + 57x + 5x2

Solving for variable 'x'.

Combine like terms: 0 + 32 = 32
32 + -57x + -5x2 = -32 + 57x + 5x2 + 32 + -57x + -5x2

Reorder the terms:
32 + -57x + -5x2 = -32 + 32 + 57x + -57x + 5x2 + -5x2

Combine like terms: -32 + 32 = 0
32 + -57x + -5x2 = 0 + 57x + -57x + 5x2 + -5x2
32 + -57x + -5x2 = 57x + -57x + 5x2 + -5x2

Combine like terms: 57x + -57x = 0
32 + -57x + -5x2 = 0 + 5x2 + -5x2
32 + -57x + -5x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
32 + -57x + -5x2 = 0

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

Divide each side by '-5'.
-6.4 + 11.4x + x2 = 0

Move the constant term to the right:

Add '6.4' to each side of the equation.
-6.4 + 11.4x + 6.4 + x2 = 0 + 6.4

Reorder the terms:
-6.4 + 6.4 + 11.4x + x2 = 0 + 6.4

Combine like terms: -6.4 + 6.4 = 0.0
0.0 + 11.4x + x2 = 0 + 6.4
11.4x + x2 = 0 + 6.4

Combine like terms: 0 + 6.4 = 6.4
11.4x + x2 = 6.4

The x term is 11.4x.  Take half its coefficient (5.7).
Square it (32.49) and add it to both sides.

Add '32.49' to each side of the equation.
11.4x + 32.49 + x2 = 6.4 + 32.49

Reorder the terms:
32.49 + 11.4x + x2 = 6.4 + 32.49

Combine like terms: 6.4 + 32.49 = 38.89
32.49 + 11.4x + x2 = 38.89

Factor a perfect square on the left side:
(x + 5.7)(x + 5.7) = 38.89

Calculate the square root of the right side: 6.236184731

Break this problem into two subproblems by setting 
(x + 5.7) equal to 6.236184731 and -6.236184731.

Subproblem 1

x + 5.7 = 6.236184731 Simplifying x + 5.7 = 6.236184731 Reorder the terms: 5.7 + x = 6.236184731 Solving 5.7 + x = 6.236184731 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.7' to each side of the equation. 5.7 + -5.7 + x = 6.236184731 + -5.7 Combine like terms: 5.7 + -5.7 = 0.0 0.0 + x = 6.236184731 + -5.7 x = 6.236184731 + -5.7 Combine like terms: 6.236184731 + -5.7 = 0.536184731 x = 0.536184731 Simplifying x = 0.536184731

Subproblem 2

x + 5.7 = -6.236184731 Simplifying x + 5.7 = -6.236184731 Reorder the terms: 5.7 + x = -6.236184731 Solving 5.7 + x = -6.236184731 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.7' to each side of the equation. 5.7 + -5.7 + x = -6.236184731 + -5.7 Combine like terms: 5.7 + -5.7 = 0.0 0.0 + x = -6.236184731 + -5.7 x = -6.236184731 + -5.7 Combine like terms: -6.236184731 + -5.7 = -11.936184731 x = -11.936184731 Simplifying x = -11.936184731

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.536184731, -11.936184731}

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