5x^2-96x+80=0

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Solution for 5x^2-96x+80=0 equation:


Simplifying
5x2 + -96x + 80 = 0

Reorder the terms:
80 + -96x + 5x2 = 0

Solving
80 + -96x + 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'.
16 + -19.2x + x2 = 0

Move the constant term to the right:

Add '-16' to each side of the equation.
16 + -19.2x + -16 + x2 = 0 + -16

Reorder the terms:
16 + -16 + -19.2x + x2 = 0 + -16

Combine like terms: 16 + -16 = 0
0 + -19.2x + x2 = 0 + -16
-19.2x + x2 = 0 + -16

Combine like terms: 0 + -16 = -16
-19.2x + x2 = -16

The x term is -19.2x.  Take half its coefficient (-9.6).
Square it (92.16) and add it to both sides.

Add '92.16' to each side of the equation.
-19.2x + 92.16 + x2 = -16 + 92.16

Reorder the terms:
92.16 + -19.2x + x2 = -16 + 92.16

Combine like terms: -16 + 92.16 = 76.16
92.16 + -19.2x + x2 = 76.16

Factor a perfect square on the left side:
(x + -9.6)(x + -9.6) = 76.16

Calculate the square root of the right side: 8.726969692

Break this problem into two subproblems by setting 
(x + -9.6) equal to 8.726969692 and -8.726969692.

Subproblem 1

x + -9.6 = 8.726969692 Simplifying x + -9.6 = 8.726969692 Reorder the terms: -9.6 + x = 8.726969692 Solving -9.6 + x = 8.726969692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.6' to each side of the equation. -9.6 + 9.6 + x = 8.726969692 + 9.6 Combine like terms: -9.6 + 9.6 = 0.0 0.0 + x = 8.726969692 + 9.6 x = 8.726969692 + 9.6 Combine like terms: 8.726969692 + 9.6 = 18.326969692 x = 18.326969692 Simplifying x = 18.326969692

Subproblem 2

x + -9.6 = -8.726969692 Simplifying x + -9.6 = -8.726969692 Reorder the terms: -9.6 + x = -8.726969692 Solving -9.6 + x = -8.726969692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.6' to each side of the equation. -9.6 + 9.6 + x = -8.726969692 + 9.6 Combine like terms: -9.6 + 9.6 = 0.0 0.0 + x = -8.726969692 + 9.6 x = -8.726969692 + 9.6 Combine like terms: -8.726969692 + 9.6 = 0.873030308 x = 0.873030308 Simplifying x = 0.873030308

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.326969692, 0.873030308}

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