x^2-200x-4000=0

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Solution for x^2-200x-4000=0 equation:


Simplifying
x2 + -200x + -4000 = 0

Reorder the terms:
-4000 + -200x + x2 = 0

Solving
-4000 + -200x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '4000' to each side of the equation.
-4000 + -200x + 4000 + x2 = 0 + 4000

Reorder the terms:
-4000 + 4000 + -200x + x2 = 0 + 4000

Combine like terms: -4000 + 4000 = 0
0 + -200x + x2 = 0 + 4000
-200x + x2 = 0 + 4000

Combine like terms: 0 + 4000 = 4000
-200x + x2 = 4000

The x term is -200x.  Take half its coefficient (-100).
Square it (10000) and add it to both sides.

Add '10000' to each side of the equation.
-200x + 10000 + x2 = 4000 + 10000

Reorder the terms:
10000 + -200x + x2 = 4000 + 10000

Combine like terms: 4000 + 10000 = 14000
10000 + -200x + x2 = 14000

Factor a perfect square on the left side:
(x + -100)(x + -100) = 14000

Calculate the square root of the right side: 118.321595662

Break this problem into two subproblems by setting 
(x + -100) equal to 118.321595662 and -118.321595662.

Subproblem 1

x + -100 = 118.321595662 Simplifying x + -100 = 118.321595662 Reorder the terms: -100 + x = 118.321595662 Solving -100 + x = 118.321595662 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '100' to each side of the equation. -100 + 100 + x = 118.321595662 + 100 Combine like terms: -100 + 100 = 0 0 + x = 118.321595662 + 100 x = 118.321595662 + 100 Combine like terms: 118.321595662 + 100 = 218.321595662 x = 218.321595662 Simplifying x = 218.321595662

Subproblem 2

x + -100 = -118.321595662 Simplifying x + -100 = -118.321595662 Reorder the terms: -100 + x = -118.321595662 Solving -100 + x = -118.321595662 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '100' to each side of the equation. -100 + 100 + x = -118.321595662 + 100 Combine like terms: -100 + 100 = 0 0 + x = -118.321595662 + 100 x = -118.321595662 + 100 Combine like terms: -118.321595662 + 100 = -18.321595662 x = -18.321595662 Simplifying x = -18.321595662

Solution

The solution to the problem is based on the solutions from the subproblems. x = {218.321595662, -18.321595662}

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