0=8x^2-13x+1

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Solution for 0=8x^2-13x+1 equation:


Simplifying
0 = 8x2 + -13x + 1

Reorder the terms:
0 = 1 + -13x + 8x2

Solving
0 = 1 + -13x + 8x2

Solving for variable 'x'.

Combine like terms: 0 + -1 = -1
-1 + 13x + -8x2 = 1 + -13x + 8x2 + -1 + 13x + -8x2

Reorder the terms:
-1 + 13x + -8x2 = 1 + -1 + -13x + 13x + 8x2 + -8x2

Combine like terms: 1 + -1 = 0
-1 + 13x + -8x2 = 0 + -13x + 13x + 8x2 + -8x2
-1 + 13x + -8x2 = -13x + 13x + 8x2 + -8x2

Combine like terms: -13x + 13x = 0
-1 + 13x + -8x2 = 0 + 8x2 + -8x2
-1 + 13x + -8x2 = 8x2 + -8x2

Combine like terms: 8x2 + -8x2 = 0
-1 + 13x + -8x2 = 0

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

Divide each side by '-8'.
0.125 + -1.625x + x2 = 0

Move the constant term to the right:

Add '-0.125' to each side of the equation.
0.125 + -1.625x + -0.125 + x2 = 0 + -0.125

Reorder the terms:
0.125 + -0.125 + -1.625x + x2 = 0 + -0.125

Combine like terms: 0.125 + -0.125 = 0.000
0.000 + -1.625x + x2 = 0 + -0.125
-1.625x + x2 = 0 + -0.125

Combine like terms: 0 + -0.125 = -0.125
-1.625x + x2 = -0.125

The x term is -1.625x.  Take half its coefficient (-0.8125).
Square it (0.66015625) and add it to both sides.

Add '0.66015625' to each side of the equation.
-1.625x + 0.66015625 + x2 = -0.125 + 0.66015625

Reorder the terms:
0.66015625 + -1.625x + x2 = -0.125 + 0.66015625

Combine like terms: -0.125 + 0.66015625 = 0.53515625
0.66015625 + -1.625x + x2 = 0.53515625

Factor a perfect square on the left side:
(x + -0.8125)(x + -0.8125) = 0.53515625

Calculate the square root of the right side: 0.731543744

Break this problem into two subproblems by setting 
(x + -0.8125) equal to 0.731543744 and -0.731543744.

Subproblem 1

x + -0.8125 = 0.731543744 Simplifying x + -0.8125 = 0.731543744 Reorder the terms: -0.8125 + x = 0.731543744 Solving -0.8125 + x = 0.731543744 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8125' to each side of the equation. -0.8125 + 0.8125 + x = 0.731543744 + 0.8125 Combine like terms: -0.8125 + 0.8125 = 0.0000 0.0000 + x = 0.731543744 + 0.8125 x = 0.731543744 + 0.8125 Combine like terms: 0.731543744 + 0.8125 = 1.544043744 x = 1.544043744 Simplifying x = 1.544043744

Subproblem 2

x + -0.8125 = -0.731543744 Simplifying x + -0.8125 = -0.731543744 Reorder the terms: -0.8125 + x = -0.731543744 Solving -0.8125 + x = -0.731543744 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8125' to each side of the equation. -0.8125 + 0.8125 + x = -0.731543744 + 0.8125 Combine like terms: -0.8125 + 0.8125 = 0.0000 0.0000 + x = -0.731543744 + 0.8125 x = -0.731543744 + 0.8125 Combine like terms: -0.731543744 + 0.8125 = 0.080956256 x = 0.080956256 Simplifying x = 0.080956256

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.544043744, 0.080956256}

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