2x^2-10000x-5=0

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Solution for 2x^2-10000x-5=0 equation:


Simplifying
2x2 + -10000x + -5 = 0

Reorder the terms:
-5 + -10000x + 2x2 = 0

Solving
-5 + -10000x + 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'.
-2.5 + -5000x + x2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + -5000x + 2.5 + x2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + -5000x + x2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + -5000x + x2 = 0 + 2.5
-5000x + x2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
-5000x + x2 = 2.5

The x term is -5000x.  Take half its coefficient (-2500).
Square it (6250000) and add it to both sides.

Add '6250000' to each side of the equation.
-5000x + 6250000 + x2 = 2.5 + 6250000

Reorder the terms:
6250000 + -5000x + x2 = 2.5 + 6250000

Combine like terms: 2.5 + 6250000 = 6250002.5
6250000 + -5000x + x2 = 6250002.5

Factor a perfect square on the left side:
(x + -2500)(x + -2500) = 6250002.5

Calculate the square root of the right side: 2500.0005

Break this problem into two subproblems by setting 
(x + -2500) equal to 2500.0005 and -2500.0005.

Subproblem 1

x + -2500 = 2500.0005 Simplifying x + -2500 = 2500.0005 Reorder the terms: -2500 + x = 2500.0005 Solving -2500 + x = 2500.0005 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2500' to each side of the equation. -2500 + 2500 + x = 2500.0005 + 2500 Combine like terms: -2500 + 2500 = 0 0 + x = 2500.0005 + 2500 x = 2500.0005 + 2500 Combine like terms: 2500.0005 + 2500 = 5000.0005 x = 5000.0005 Simplifying x = 5000.0005

Subproblem 2

x + -2500 = -2500.0005 Simplifying x + -2500 = -2500.0005 Reorder the terms: -2500 + x = -2500.0005 Solving -2500 + x = -2500.0005 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2500' to each side of the equation. -2500 + 2500 + x = -2500.0005 + 2500 Combine like terms: -2500 + 2500 = 0 0 + x = -2500.0005 + 2500 x = -2500.0005 + 2500 Combine like terms: -2500.0005 + 2500 = -0.0005 x = -0.0005 Simplifying x = -0.0005

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5000.0005, -0.0005}

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