8x^2-x-10000=0

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Solution for 8x^2-x-10000=0 equation:


Simplifying
8x2 + -1x + -10000 = 0

Reorder the terms:
-10000 + -1x + 8x2 = 0

Solving
-10000 + -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'.
-1250 + -0.125x + x2 = 0

Move the constant term to the right:

Add '1250' to each side of the equation.
-1250 + -0.125x + 1250 + x2 = 0 + 1250

Reorder the terms:
-1250 + 1250 + -0.125x + x2 = 0 + 1250

Combine like terms: -1250 + 1250 = 0
0 + -0.125x + x2 = 0 + 1250
-0.125x + x2 = 0 + 1250

Combine like terms: 0 + 1250 = 1250
-0.125x + x2 = 1250

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 = 1250 + 0.00390625

Reorder the terms:
0.00390625 + -0.125x + x2 = 1250 + 0.00390625

Combine like terms: 1250 + 0.00390625 = 1250.00390625
0.00390625 + -0.125x + x2 = 1250.00390625

Factor a perfect square on the left side:
(x + -0.0625)(x + -0.0625) = 1250.00390625

Calculate the square root of the right side: 35.355394302

Break this problem into two subproblems by setting 
(x + -0.0625) equal to 35.355394302 and -35.355394302.

Subproblem 1

x + -0.0625 = 35.355394302 Simplifying x + -0.0625 = 35.355394302 Reorder the terms: -0.0625 + x = 35.355394302 Solving -0.0625 + x = 35.355394302 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 = 35.355394302 + 0.0625 Combine like terms: -0.0625 + 0.0625 = 0.0000 0.0000 + x = 35.355394302 + 0.0625 x = 35.355394302 + 0.0625 Combine like terms: 35.355394302 + 0.0625 = 35.417894302 x = 35.417894302 Simplifying x = 35.417894302

Subproblem 2

x + -0.0625 = -35.355394302 Simplifying x + -0.0625 = -35.355394302 Reorder the terms: -0.0625 + x = -35.355394302 Solving -0.0625 + x = -35.355394302 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 = -35.355394302 + 0.0625 Combine like terms: -0.0625 + 0.0625 = 0.0000 0.0000 + x = -35.355394302 + 0.0625 x = -35.355394302 + 0.0625 Combine like terms: -35.355394302 + 0.0625 = -35.292894302 x = -35.292894302 Simplifying x = -35.292894302

Solution

The solution to the problem is based on the solutions from the subproblems. x = {35.417894302, -35.292894302}

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