(x)=-0.1x^2+200x+10000

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Solution for (x)=-0.1x^2+200x+10000 equation:


Simplifying
(x) = -0.1x2 + 200x + 10000
x = -0.1x2 + 200x + 10000

Reorder the terms:
x = 10000 + 200x + -0.1x2

Solving
x = 10000 + 200x + -0.1x2

Solving for variable 'x'.

Reorder the terms:
-10000 + x + -200x + 0.1x2 = 10000 + 200x + -0.1x2 + -10000 + -200x + 0.1x2

Combine like terms: x + -200x = -199x
-10000 + -199x + 0.1x2 = 10000 + 200x + -0.1x2 + -10000 + -200x + 0.1x2

Reorder the terms:
-10000 + -199x + 0.1x2 = 10000 + -10000 + 200x + -200x + -0.1x2 + 0.1x2

Combine like terms: 10000 + -10000 = 0
-10000 + -199x + 0.1x2 = 0 + 200x + -200x + -0.1x2 + 0.1x2
-10000 + -199x + 0.1x2 = 200x + -200x + -0.1x2 + 0.1x2

Combine like terms: 200x + -200x = 0
-10000 + -199x + 0.1x2 = 0 + -0.1x2 + 0.1x2
-10000 + -199x + 0.1x2 = -0.1x2 + 0.1x2

Combine like terms: -0.1x2 + 0.1x2 = 0.0
-10000 + -199x + 0.1x2 = 0.0

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

Divide each side by '0.1'.
-100000 + -1990x + x2 = 0

Move the constant term to the right:

Add '100000' to each side of the equation.
-100000 + -1990x + 100000 + x2 = 0 + 100000

Reorder the terms:
-100000 + 100000 + -1990x + x2 = 0 + 100000

Combine like terms: -100000 + 100000 = 0
0 + -1990x + x2 = 0 + 100000
-1990x + x2 = 0 + 100000

Combine like terms: 0 + 100000 = 100000
-1990x + x2 = 100000

The x term is -1990x.  Take half its coefficient (-995).
Square it (990025) and add it to both sides.

Add '990025' to each side of the equation.
-1990x + 990025 + x2 = 100000 + 990025

Reorder the terms:
990025 + -1990x + x2 = 100000 + 990025

Combine like terms: 100000 + 990025 = 1090025
990025 + -1990x + x2 = 1090025

Factor a perfect square on the left side:
(x + -995)(x + -995) = 1090025

Calculate the square root of the right side: 1044.042623651

Break this problem into two subproblems by setting 
(x + -995) equal to 1044.042623651 and -1044.042623651.

Subproblem 1

x + -995 = 1044.042623651 Simplifying x + -995 = 1044.042623651 Reorder the terms: -995 + x = 1044.042623651 Solving -995 + x = 1044.042623651 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '995' to each side of the equation. -995 + 995 + x = 1044.042623651 + 995 Combine like terms: -995 + 995 = 0 0 + x = 1044.042623651 + 995 x = 1044.042623651 + 995 Combine like terms: 1044.042623651 + 995 = 2039.042623651 x = 2039.042623651 Simplifying x = 2039.042623651

Subproblem 2

x + -995 = -1044.042623651 Simplifying x + -995 = -1044.042623651 Reorder the terms: -995 + x = -1044.042623651 Solving -995 + x = -1044.042623651 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '995' to each side of the equation. -995 + 995 + x = -1044.042623651 + 995 Combine like terms: -995 + 995 = 0 0 + x = -1044.042623651 + 995 x = -1044.042623651 + 995 Combine like terms: -1044.042623651 + 995 = -49.042623651 x = -49.042623651 Simplifying x = -49.042623651

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2039.042623651, -49.042623651}

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