-8x^2-x+1=0

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


Simplifying
-8x2 + -1x + 1 = 0

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

Solving
1 + -1x + -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'.
-0.125 + 0.125x + x2 = 0

Move the constant term to the right:

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

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

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

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

The x term is 0.125x.  Take half its coefficient (0.0625).
Square it (0.00390625) and add it to both sides.

Add '0.00390625' to each side of the equation.
0.125x + 0.00390625 + x2 = 0.125 + 0.00390625

Reorder the terms:
0.00390625 + 0.125x + x2 = 0.125 + 0.00390625

Combine like terms: 0.125 + 0.00390625 = 0.12890625
0.00390625 + 0.125x + x2 = 0.12890625

Factor a perfect square on the left side:
(x + 0.0625)(x + 0.0625) = 0.12890625

Calculate the square root of the right side: 0.359035165

Break this problem into two subproblems by setting 
(x + 0.0625) equal to 0.359035165 and -0.359035165.

Subproblem 1

x + 0.0625 = 0.359035165 Simplifying x + 0.0625 = 0.359035165 Reorder the terms: 0.0625 + x = 0.359035165 Solving 0.0625 + x = 0.359035165 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.0625' to each side of the equation. 0.0625 + -0.0625 + x = 0.359035165 + -0.0625 Combine like terms: 0.0625 + -0.0625 = 0.0000 0.0000 + x = 0.359035165 + -0.0625 x = 0.359035165 + -0.0625 Combine like terms: 0.359035165 + -0.0625 = 0.296535165 x = 0.296535165 Simplifying x = 0.296535165

Subproblem 2

x + 0.0625 = -0.359035165 Simplifying x + 0.0625 = -0.359035165 Reorder the terms: 0.0625 + x = -0.359035165 Solving 0.0625 + x = -0.359035165 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.0625' to each side of the equation. 0.0625 + -0.0625 + x = -0.359035165 + -0.0625 Combine like terms: 0.0625 + -0.0625 = 0.0000 0.0000 + x = -0.359035165 + -0.0625 x = -0.359035165 + -0.0625 Combine like terms: -0.359035165 + -0.0625 = -0.421535165 x = -0.421535165 Simplifying x = -0.421535165

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.296535165, -0.421535165}

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