64x^2-80x+5=0

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Solution for 64x^2-80x+5=0 equation:


Simplifying
64x2 + -80x + 5 = 0

Reorder the terms:
5 + -80x + 64x2 = 0

Solving
5 + -80x + 64x2 = 0

Solving for variable 'x'.

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

Divide each side by '64'.
0.078125 + -1.25x + x2 = 0

Move the constant term to the right:

Add '-0.078125' to each side of the equation.
0.078125 + -1.25x + -0.078125 + x2 = 0 + -0.078125

Reorder the terms:
0.078125 + -0.078125 + -1.25x + x2 = 0 + -0.078125

Combine like terms: 0.078125 + -0.078125 = 0.000000
0.000000 + -1.25x + x2 = 0 + -0.078125
-1.25x + x2 = 0 + -0.078125

Combine like terms: 0 + -0.078125 = -0.078125
-1.25x + x2 = -0.078125

The x term is -1.25x.  Take half its coefficient (-0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
-1.25x + 0.390625 + x2 = -0.078125 + 0.390625

Reorder the terms:
0.390625 + -1.25x + x2 = -0.078125 + 0.390625

Combine like terms: -0.078125 + 0.390625 = 0.3125
0.390625 + -1.25x + x2 = 0.3125

Factor a perfect square on the left side:
(x + -0.625)(x + -0.625) = 0.3125

Calculate the square root of the right side: 0.559016994

Break this problem into two subproblems by setting 
(x + -0.625) equal to 0.559016994 and -0.559016994.

Subproblem 1

x + -0.625 = 0.559016994 Simplifying x + -0.625 = 0.559016994 Reorder the terms: -0.625 + x = 0.559016994 Solving -0.625 + x = 0.559016994 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + x = 0.559016994 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + x = 0.559016994 + 0.625 x = 0.559016994 + 0.625 Combine like terms: 0.559016994 + 0.625 = 1.184016994 x = 1.184016994 Simplifying x = 1.184016994

Subproblem 2

x + -0.625 = -0.559016994 Simplifying x + -0.625 = -0.559016994 Reorder the terms: -0.625 + x = -0.559016994 Solving -0.625 + x = -0.559016994 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + x = -0.559016994 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + x = -0.559016994 + 0.625 x = -0.559016994 + 0.625 Combine like terms: -0.559016994 + 0.625 = 0.065983006 x = 0.065983006 Simplifying x = 0.065983006

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.184016994, 0.065983006}

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