200=-1000x^2+1100x-2.5

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Solution for 200=-1000x^2+1100x-2.5 equation:


Simplifying
200 = -1000x2 + 1100x + -2.5

Reorder the terms:
200 = -2.5 + 1100x + -1000x2

Solving
200 = -2.5 + 1100x + -1000x2

Solving for variable 'x'.

Combine like terms: 200 + 2.5 = 202.5
202.5 + -1100x + 1000x2 = -2.5 + 1100x + -1000x2 + 2.5 + -1100x + 1000x2

Reorder the terms:
202.5 + -1100x + 1000x2 = -2.5 + 2.5 + 1100x + -1100x + -1000x2 + 1000x2

Combine like terms: -2.5 + 2.5 = 0.0
202.5 + -1100x + 1000x2 = 0.0 + 1100x + -1100x + -1000x2 + 1000x2
202.5 + -1100x + 1000x2 = 1100x + -1100x + -1000x2 + 1000x2

Combine like terms: 1100x + -1100x = 0
202.5 + -1100x + 1000x2 = 0 + -1000x2 + 1000x2
202.5 + -1100x + 1000x2 = -1000x2 + 1000x2

Combine like terms: -1000x2 + 1000x2 = 0
202.5 + -1100x + 1000x2 = 0

Begin completing the square.  Divide all terms by
1000 the coefficient of the squared term: 

Divide each side by '1000'.
0.2025 + -1.1x + x2 = 0

Move the constant term to the right:

Add '-0.2025' to each side of the equation.
0.2025 + -1.1x + -0.2025 + x2 = 0 + -0.2025

Reorder the terms:
0.2025 + -0.2025 + -1.1x + x2 = 0 + -0.2025

Combine like terms: 0.2025 + -0.2025 = 0.0000
0.0000 + -1.1x + x2 = 0 + -0.2025
-1.1x + x2 = 0 + -0.2025

Combine like terms: 0 + -0.2025 = -0.2025
-1.1x + x2 = -0.2025

The x term is -1.1x.  Take half its coefficient (-0.55).
Square it (0.3025) and add it to both sides.

Add '0.3025' to each side of the equation.
-1.1x + 0.3025 + x2 = -0.2025 + 0.3025

Reorder the terms:
0.3025 + -1.1x + x2 = -0.2025 + 0.3025

Combine like terms: -0.2025 + 0.3025 = 0.1
0.3025 + -1.1x + x2 = 0.1

Factor a perfect square on the left side:
(x + -0.55)(x + -0.55) = 0.1

Calculate the square root of the right side: 0.316227766

Break this problem into two subproblems by setting 
(x + -0.55) equal to 0.316227766 and -0.316227766.

Subproblem 1

x + -0.55 = 0.316227766 Simplifying x + -0.55 = 0.316227766 Reorder the terms: -0.55 + x = 0.316227766 Solving -0.55 + x = 0.316227766 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.55' to each side of the equation. -0.55 + 0.55 + x = 0.316227766 + 0.55 Combine like terms: -0.55 + 0.55 = 0.00 0.00 + x = 0.316227766 + 0.55 x = 0.316227766 + 0.55 Combine like terms: 0.316227766 + 0.55 = 0.866227766 x = 0.866227766 Simplifying x = 0.866227766

Subproblem 2

x + -0.55 = -0.316227766 Simplifying x + -0.55 = -0.316227766 Reorder the terms: -0.55 + x = -0.316227766 Solving -0.55 + x = -0.316227766 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.55' to each side of the equation. -0.55 + 0.55 + x = -0.316227766 + 0.55 Combine like terms: -0.55 + 0.55 = 0.00 0.00 + x = -0.316227766 + 0.55 x = -0.316227766 + 0.55 Combine like terms: -0.316227766 + 0.55 = 0.233772234 x = 0.233772234 Simplifying x = 0.233772234

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.866227766, 0.233772234}

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