8x^2-80x+177=0

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Solution for 8x^2-80x+177=0 equation:


Simplifying
8x2 + -80x + 177 = 0

Reorder the terms:
177 + -80x + 8x2 = 0

Solving
177 + -80x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
22.125 + -10x + x2 = 0

Move the constant term to the right:

Add '-22.125' to each side of the equation.
22.125 + -10x + -22.125 + x2 = 0 + -22.125

Reorder the terms:
22.125 + -22.125 + -10x + x2 = 0 + -22.125

Combine like terms: 22.125 + -22.125 = 0.000
0.000 + -10x + x2 = 0 + -22.125
-10x + x2 = 0 + -22.125

Combine like terms: 0 + -22.125 = -22.125
-10x + x2 = -22.125

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = -22.125 + 25

Reorder the terms:
25 + -10x + x2 = -22.125 + 25

Combine like terms: -22.125 + 25 = 2.875
25 + -10x + x2 = 2.875

Factor a perfect square on the left side:
(x + -5)(x + -5) = 2.875

Calculate the square root of the right side: 1.695582496

Break this problem into two subproblems by setting 
(x + -5) equal to 1.695582496 and -1.695582496.

Subproblem 1

x + -5 = 1.695582496 Simplifying x + -5 = 1.695582496 Reorder the terms: -5 + x = 1.695582496 Solving -5 + x = 1.695582496 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 1.695582496 + 5 Combine like terms: -5 + 5 = 0 0 + x = 1.695582496 + 5 x = 1.695582496 + 5 Combine like terms: 1.695582496 + 5 = 6.695582496 x = 6.695582496 Simplifying x = 6.695582496

Subproblem 2

x + -5 = -1.695582496 Simplifying x + -5 = -1.695582496 Reorder the terms: -5 + x = -1.695582496 Solving -5 + x = -1.695582496 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -1.695582496 + 5 Combine like terms: -5 + 5 = 0 0 + x = -1.695582496 + 5 x = -1.695582496 + 5 Combine like terms: -1.695582496 + 5 = 3.304417504 x = 3.304417504 Simplifying x = 3.304417504

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.695582496, 3.304417504}

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