(2x^2)-x-100000=0

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Solution for (2x^2)-x-100000=0 equation:


Simplifying
(2x2) + -1x + -100000 = 0

Reorder the terms:
-100000 + -1x + (2x2) = 0

Solving
-100000 + -1x + (2x2) = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-50000 + -0.5x + x2 = 0

Move the constant term to the right:

Add '50000' to each side of the equation.
-50000 + -0.5x + 50000 + x2 = 0 + 50000

Reorder the terms:
-50000 + 50000 + -0.5x + x2 = 0 + 50000

Combine like terms: -50000 + 50000 = 0
0 + -0.5x + x2 = 0 + 50000
-0.5x + x2 = 0 + 50000

Combine like terms: 0 + 50000 = 50000
-0.5x + x2 = 50000

The x term is -0.5x.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5x + 0.0625 + x2 = 50000 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 50000 + 0.0625

Combine like terms: 50000 + 0.0625 = 50000.0625
0.0625 + -0.5x + x2 = 50000.0625

Factor a perfect square on the left side:
((x) + -0.25)((x) + -0.25) = 50000.0625

Calculate the square root of the right side: 223.606937504

Break this problem into two subproblems by setting 
((x) + -0.25) equal to 223.606937504 and -223.606937504.

Subproblem 1

(x) + -0.25 = 223.606937504 Simplifying (x) + -0.25 = 223.606937504 x + -0.25 = 223.606937504 Reorder the terms: -0.25 + x = 223.606937504 Solving -0.25 + x = 223.606937504 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 223.606937504 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 223.606937504 + 0.25 x = 223.606937504 + 0.25 Combine like terms: 223.606937504 + 0.25 = 223.856937504 x = 223.856937504 Simplifying x = 223.856937504

Subproblem 2

(x) + -0.25 = -223.606937504 Simplifying (x) + -0.25 = -223.606937504 x + -0.25 = -223.606937504 Reorder the terms: -0.25 + x = -223.606937504 Solving -0.25 + x = -223.606937504 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -223.606937504 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -223.606937504 + 0.25 x = -223.606937504 + 0.25 Combine like terms: -223.606937504 + 0.25 = -223.356937504 x = -223.356937504 Simplifying x = -223.356937504

Solution

The solution to the problem is based on the solutions from the subproblems. x = {223.856937504, -223.356937504}

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