x=-.2x^2+100x-9500

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Solution for x=-.2x^2+100x-9500 equation:


Simplifying
x = -0.2x2 + 100x + -9500

Reorder the terms:
x = -9500 + 100x + -0.2x2

Solving
x = -9500 + 100x + -0.2x2

Solving for variable 'x'.

Reorder the terms:
9500 + x + -100x + 0.2x2 = -9500 + 100x + -0.2x2 + 9500 + -100x + 0.2x2

Combine like terms: x + -100x = -99x
9500 + -99x + 0.2x2 = -9500 + 100x + -0.2x2 + 9500 + -100x + 0.2x2

Reorder the terms:
9500 + -99x + 0.2x2 = -9500 + 9500 + 100x + -100x + -0.2x2 + 0.2x2

Combine like terms: -9500 + 9500 = 0
9500 + -99x + 0.2x2 = 0 + 100x + -100x + -0.2x2 + 0.2x2
9500 + -99x + 0.2x2 = 100x + -100x + -0.2x2 + 0.2x2

Combine like terms: 100x + -100x = 0
9500 + -99x + 0.2x2 = 0 + -0.2x2 + 0.2x2
9500 + -99x + 0.2x2 = -0.2x2 + 0.2x2

Combine like terms: -0.2x2 + 0.2x2 = 0.0
9500 + -99x + 0.2x2 = 0.0

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

Divide each side by '0.2'.
47500 + -495x + x2 = 0

Move the constant term to the right:

Add '-47500' to each side of the equation.
47500 + -495x + -47500 + x2 = 0 + -47500

Reorder the terms:
47500 + -47500 + -495x + x2 = 0 + -47500

Combine like terms: 47500 + -47500 = 0
0 + -495x + x2 = 0 + -47500
-495x + x2 = 0 + -47500

Combine like terms: 0 + -47500 = -47500
-495x + x2 = -47500

The x term is -495x.  Take half its coefficient (-247.5).
Square it (61256.25) and add it to both sides.

Add '61256.25' to each side of the equation.
-495x + 61256.25 + x2 = -47500 + 61256.25

Reorder the terms:
61256.25 + -495x + x2 = -47500 + 61256.25

Combine like terms: -47500 + 61256.25 = 13756.25
61256.25 + -495x + x2 = 13756.25

Factor a perfect square on the left side:
(x + -247.5)(x + -247.5) = 13756.25

Calculate the square root of the right side: 117.287041057

Break this problem into two subproblems by setting 
(x + -247.5) equal to 117.287041057 and -117.287041057.

Subproblem 1

x + -247.5 = 117.287041057 Simplifying x + -247.5 = 117.287041057 Reorder the terms: -247.5 + x = 117.287041057 Solving -247.5 + x = 117.287041057 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '247.5' to each side of the equation. -247.5 + 247.5 + x = 117.287041057 + 247.5 Combine like terms: -247.5 + 247.5 = 0.0 0.0 + x = 117.287041057 + 247.5 x = 117.287041057 + 247.5 Combine like terms: 117.287041057 + 247.5 = 364.787041057 x = 364.787041057 Simplifying x = 364.787041057

Subproblem 2

x + -247.5 = -117.287041057 Simplifying x + -247.5 = -117.287041057 Reorder the terms: -247.5 + x = -117.287041057 Solving -247.5 + x = -117.287041057 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '247.5' to each side of the equation. -247.5 + 247.5 + x = -117.287041057 + 247.5 Combine like terms: -247.5 + 247.5 = 0.0 0.0 + x = -117.287041057 + 247.5 x = -117.287041057 + 247.5 Combine like terms: -117.287041057 + 247.5 = 130.212958943 x = 130.212958943 Simplifying x = 130.212958943

Solution

The solution to the problem is based on the solutions from the subproblems. x = {364.787041057, 130.212958943}

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