8x^2-x-194=0

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Solution for 8x^2-x-194=0 equation:


Simplifying
8x2 + -1x + -194 = 0

Reorder the terms:
-194 + -1x + 8x2 = 0

Solving
-194 + -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'.
-24.25 + -0.125x + x2 = 0

Move the constant term to the right:

Add '24.25' to each side of the equation.
-24.25 + -0.125x + 24.25 + x2 = 0 + 24.25

Reorder the terms:
-24.25 + 24.25 + -0.125x + x2 = 0 + 24.25

Combine like terms: -24.25 + 24.25 = 0.00
0.00 + -0.125x + x2 = 0 + 24.25
-0.125x + x2 = 0 + 24.25

Combine like terms: 0 + 24.25 = 24.25
-0.125x + x2 = 24.25

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 = 24.25 + 0.00390625

Reorder the terms:
0.00390625 + -0.125x + x2 = 24.25 + 0.00390625

Combine like terms: 24.25 + 0.00390625 = 24.25390625
0.00390625 + -0.125x + x2 = 24.25390625

Factor a perfect square on the left side:
(x + -0.0625)(x + -0.0625) = 24.25390625

Calculate the square root of the right side: 4.924825505

Break this problem into two subproblems by setting 
(x + -0.0625) equal to 4.924825505 and -4.924825505.

Subproblem 1

x + -0.0625 = 4.924825505 Simplifying x + -0.0625 = 4.924825505 Reorder the terms: -0.0625 + x = 4.924825505 Solving -0.0625 + x = 4.924825505 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 = 4.924825505 + 0.0625 Combine like terms: -0.0625 + 0.0625 = 0.0000 0.0000 + x = 4.924825505 + 0.0625 x = 4.924825505 + 0.0625 Combine like terms: 4.924825505 + 0.0625 = 4.987325505 x = 4.987325505 Simplifying x = 4.987325505

Subproblem 2

x + -0.0625 = -4.924825505 Simplifying x + -0.0625 = -4.924825505 Reorder the terms: -0.0625 + x = -4.924825505 Solving -0.0625 + x = -4.924825505 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 = -4.924825505 + 0.0625 Combine like terms: -0.0625 + 0.0625 = 0.0000 0.0000 + x = -4.924825505 + 0.0625 x = -4.924825505 + 0.0625 Combine like terms: -4.924825505 + 0.0625 = -4.862325505 x = -4.862325505 Simplifying x = -4.862325505

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.987325505, -4.862325505}

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