(-2x^2+200x)-(x^2+2x+500)=

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Solution for (-2x^2+200x)-(x^2+2x+500)= equation:


Simplifying
(-2x2 + 200x) + -1(x2 + 2x + 500) = 0

Reorder the terms:
(200x + -2x2) + -1(x2 + 2x + 500) = 0

Remove parenthesis around (200x + -2x2)
200x + -2x2 + -1(x2 + 2x + 500) = 0

Reorder the terms:
200x + -2x2 + -1(500 + 2x + x2) = 0
200x + -2x2 + (500 * -1 + 2x * -1 + x2 * -1) = 0
200x + -2x2 + (-500 + -2x + -1x2) = 0

Reorder the terms:
-500 + 200x + -2x + -2x2 + -1x2 = 0

Combine like terms: 200x + -2x = 198x
-500 + 198x + -2x2 + -1x2 = 0

Combine like terms: -2x2 + -1x2 = -3x2
-500 + 198x + -3x2 = 0

Solving
-500 + 198x + -3x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
166.6666667 + -66x + x2 = 0

Move the constant term to the right:

Add '-166.6666667' to each side of the equation.
166.6666667 + -66x + -166.6666667 + x2 = 0 + -166.6666667

Reorder the terms:
166.6666667 + -166.6666667 + -66x + x2 = 0 + -166.6666667

Combine like terms: 166.6666667 + -166.6666667 = 0.0000000
0.0000000 + -66x + x2 = 0 + -166.6666667
-66x + x2 = 0 + -166.6666667

Combine like terms: 0 + -166.6666667 = -166.6666667
-66x + x2 = -166.6666667

The x term is -66x.  Take half its coefficient (-33).
Square it (1089) and add it to both sides.

Add '1089' to each side of the equation.
-66x + 1089 + x2 = -166.6666667 + 1089

Reorder the terms:
1089 + -66x + x2 = -166.6666667 + 1089

Combine like terms: -166.6666667 + 1089 = 922.3333333
1089 + -66x + x2 = 922.3333333

Factor a perfect square on the left side:
(x + -33)(x + -33) = 922.3333333

Calculate the square root of the right side: 30.369941279

Break this problem into two subproblems by setting 
(x + -33) equal to 30.369941279 and -30.369941279.

Subproblem 1

x + -33 = 30.369941279 Simplifying x + -33 = 30.369941279 Reorder the terms: -33 + x = 30.369941279 Solving -33 + x = 30.369941279 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '33' to each side of the equation. -33 + 33 + x = 30.369941279 + 33 Combine like terms: -33 + 33 = 0 0 + x = 30.369941279 + 33 x = 30.369941279 + 33 Combine like terms: 30.369941279 + 33 = 63.369941279 x = 63.369941279 Simplifying x = 63.369941279

Subproblem 2

x + -33 = -30.369941279 Simplifying x + -33 = -30.369941279 Reorder the terms: -33 + x = -30.369941279 Solving -33 + x = -30.369941279 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '33' to each side of the equation. -33 + 33 + x = -30.369941279 + 33 Combine like terms: -33 + 33 = 0 0 + x = -30.369941279 + 33 x = -30.369941279 + 33 Combine like terms: -30.369941279 + 33 = 2.630058721 x = 2.630058721 Simplifying x = 2.630058721

Solution

The solution to the problem is based on the solutions from the subproblems. x = {63.369941279, 2.630058721}

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