5x^2-32x-12=0

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Solution for 5x^2-32x-12=0 equation:


Simplifying
5x2 + -32x + -12 = 0

Reorder the terms:
-12 + -32x + 5x2 = 0

Solving
-12 + -32x + 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'.
-2.4 + -6.4x + x2 = 0

Move the constant term to the right:

Add '2.4' to each side of the equation.
-2.4 + -6.4x + 2.4 + x2 = 0 + 2.4

Reorder the terms:
-2.4 + 2.4 + -6.4x + x2 = 0 + 2.4

Combine like terms: -2.4 + 2.4 = 0.0
0.0 + -6.4x + x2 = 0 + 2.4
-6.4x + x2 = 0 + 2.4

Combine like terms: 0 + 2.4 = 2.4
-6.4x + x2 = 2.4

The x term is -6.4x.  Take half its coefficient (-3.2).
Square it (10.24) and add it to both sides.

Add '10.24' to each side of the equation.
-6.4x + 10.24 + x2 = 2.4 + 10.24

Reorder the terms:
10.24 + -6.4x + x2 = 2.4 + 10.24

Combine like terms: 2.4 + 10.24 = 12.64
10.24 + -6.4x + x2 = 12.64

Factor a perfect square on the left side:
(x + -3.2)(x + -3.2) = 12.64

Calculate the square root of the right side: 3.555277767

Break this problem into two subproblems by setting 
(x + -3.2) equal to 3.555277767 and -3.555277767.

Subproblem 1

x + -3.2 = 3.555277767 Simplifying x + -3.2 = 3.555277767 Reorder the terms: -3.2 + x = 3.555277767 Solving -3.2 + x = 3.555277767 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.2' to each side of the equation. -3.2 + 3.2 + x = 3.555277767 + 3.2 Combine like terms: -3.2 + 3.2 = 0.0 0.0 + x = 3.555277767 + 3.2 x = 3.555277767 + 3.2 Combine like terms: 3.555277767 + 3.2 = 6.755277767 x = 6.755277767 Simplifying x = 6.755277767

Subproblem 2

x + -3.2 = -3.555277767 Simplifying x + -3.2 = -3.555277767 Reorder the terms: -3.2 + x = -3.555277767 Solving -3.2 + x = -3.555277767 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.2' to each side of the equation. -3.2 + 3.2 + x = -3.555277767 + 3.2 Combine like terms: -3.2 + 3.2 = 0.0 0.0 + x = -3.555277767 + 3.2 x = -3.555277767 + 3.2 Combine like terms: -3.555277767 + 3.2 = -0.355277767 x = -0.355277767 Simplifying x = -0.355277767

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.755277767, -0.355277767}

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