-.2x^2+200x-9500=0

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Solution for -.2x^2+200x-9500=0 equation:


Simplifying
-0.2x2 + 200x + -9500 = 0

Reorder the terms:
-9500 + 200x + -0.2x2 = 0

Solving
-9500 + 200x + -0.2x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.2 the coefficient of the squared term: 

Divide each side by '-0.2'.
47500 + -1000x + x2 = 0

Move the constant term to the right:

Add '-47500' to each side of the equation.
47500 + -1000x + -47500 + x2 = 0 + -47500

Reorder the terms:
47500 + -47500 + -1000x + x2 = 0 + -47500

Combine like terms: 47500 + -47500 = 0
0 + -1000x + x2 = 0 + -47500
-1000x + x2 = 0 + -47500

Combine like terms: 0 + -47500 = -47500
-1000x + x2 = -47500

The x term is -1000x.  Take half its coefficient (-500).
Square it (250000) and add it to both sides.

Add '250000' to each side of the equation.
-1000x + 250000 + x2 = -47500 + 250000

Reorder the terms:
250000 + -1000x + x2 = -47500 + 250000

Combine like terms: -47500 + 250000 = 202500
250000 + -1000x + x2 = 202500

Factor a perfect square on the left side:
(x + -500)(x + -500) = 202500

Calculate the square root of the right side: 450

Break this problem into two subproblems by setting 
(x + -500) equal to 450 and -450.

Subproblem 1

x + -500 = 450 Simplifying x + -500 = 450 Reorder the terms: -500 + x = 450 Solving -500 + x = 450 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '500' to each side of the equation. -500 + 500 + x = 450 + 500 Combine like terms: -500 + 500 = 0 0 + x = 450 + 500 x = 450 + 500 Combine like terms: 450 + 500 = 950 x = 950 Simplifying x = 950

Subproblem 2

x + -500 = -450 Simplifying x + -500 = -450 Reorder the terms: -500 + x = -450 Solving -500 + x = -450 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '500' to each side of the equation. -500 + 500 + x = -450 + 500 Combine like terms: -500 + 500 = 0 0 + x = -450 + 500 x = -450 + 500 Combine like terms: -450 + 500 = 50 x = 50 Simplifying x = 50

Solution

The solution to the problem is based on the solutions from the subproblems. x = {950, 50}

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