(2.5x^2)+500x+20000=0

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Solution for (2.5x^2)+500x+20000=0 equation:


Simplifying
(2.5x2) + 500x + 20000 = 0

Reorder the terms:
20000 + 500x + (2.5x2) = 0

Solving
20000 + 500x + (2.5x2) = 0

Solving for variable 'x'.

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

Divide each side by '2.5'.
8000 + 200x + x2 = 0

Move the constant term to the right:

Add '-8000' to each side of the equation.
8000 + 200x + -8000 + x2 = 0 + -8000

Reorder the terms:
8000 + -8000 + 200x + x2 = 0 + -8000

Combine like terms: 8000 + -8000 = 0
0 + 200x + x2 = 0 + -8000
200x + x2 = 0 + -8000

Combine like terms: 0 + -8000 = -8000
200x + x2 = -8000

The x term is 200x.  Take half its coefficient (100).
Square it (10000) and add it to both sides.

Add '10000' to each side of the equation.
200x + 10000 + x2 = -8000 + 10000

Reorder the terms:
10000 + 200x + x2 = -8000 + 10000

Combine like terms: -8000 + 10000 = 2000
10000 + 200x + x2 = 2000

Factor a perfect square on the left side:
((x) + 100)((x) + 100) = 2000

Calculate the square root of the right side: 44.72135955

Break this problem into two subproblems by setting 
((x) + 100) equal to 44.72135955 and -44.72135955.

Subproblem 1

(x) + 100 = 44.72135955 Simplifying (x) + 100 = 44.72135955 x + 100 = 44.72135955 Reorder the terms: 100 + x = 44.72135955 Solving 100 + x = 44.72135955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-100' to each side of the equation. 100 + -100 + x = 44.72135955 + -100 Combine like terms: 100 + -100 = 0 0 + x = 44.72135955 + -100 x = 44.72135955 + -100 Combine like terms: 44.72135955 + -100 = -55.27864045 x = -55.27864045 Simplifying x = -55.27864045

Subproblem 2

(x) + 100 = -44.72135955 Simplifying (x) + 100 = -44.72135955 x + 100 = -44.72135955 Reorder the terms: 100 + x = -44.72135955 Solving 100 + x = -44.72135955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-100' to each side of the equation. 100 + -100 + x = -44.72135955 + -100 Combine like terms: 100 + -100 = 0 0 + x = -44.72135955 + -100 x = -44.72135955 + -100 Combine like terms: -44.72135955 + -100 = -144.72135955 x = -144.72135955 Simplifying x = -144.72135955

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-55.27864045, -144.72135955}

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