-2.5x^2+2825x-115812.5=500000

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Solution for -2.5x^2+2825x-115812.5=500000 equation:


Simplifying
-2.5x2 + 2825x + -115812.5 = 500000

Reorder the terms:
-115812.5 + 2825x + -2.5x2 = 500000

Solving
-115812.5 + 2825x + -2.5x2 = 500000

Solving for variable 'x'.

Reorder the terms:
-115812.5 + -500000 + 2825x + -2.5x2 = 500000 + -500000

Combine like terms: -115812.5 + -500000 = -615812.5
-615812.5 + 2825x + -2.5x2 = 500000 + -500000

Combine like terms: 500000 + -500000 = 0
-615812.5 + 2825x + -2.5x2 = 0

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

Divide each side by '-2.5'.
246325 + -1130x + x2 = 0

Move the constant term to the right:

Add '-246325' to each side of the equation.
246325 + -1130x + -246325 + x2 = 0 + -246325

Reorder the terms:
246325 + -246325 + -1130x + x2 = 0 + -246325

Combine like terms: 246325 + -246325 = 0
0 + -1130x + x2 = 0 + -246325
-1130x + x2 = 0 + -246325

Combine like terms: 0 + -246325 = -246325
-1130x + x2 = -246325

The x term is -1130x.  Take half its coefficient (-565).
Square it (319225) and add it to both sides.

Add '319225' to each side of the equation.
-1130x + 319225 + x2 = -246325 + 319225

Reorder the terms:
319225 + -1130x + x2 = -246325 + 319225

Combine like terms: -246325 + 319225 = 72900
319225 + -1130x + x2 = 72900

Factor a perfect square on the left side:
(x + -565)(x + -565) = 72900

Calculate the square root of the right side: 270

Break this problem into two subproblems by setting 
(x + -565) equal to 270 and -270.

Subproblem 1

x + -565 = 270 Simplifying x + -565 = 270 Reorder the terms: -565 + x = 270 Solving -565 + x = 270 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '565' to each side of the equation. -565 + 565 + x = 270 + 565 Combine like terms: -565 + 565 = 0 0 + x = 270 + 565 x = 270 + 565 Combine like terms: 270 + 565 = 835 x = 835 Simplifying x = 835

Subproblem 2

x + -565 = -270 Simplifying x + -565 = -270 Reorder the terms: -565 + x = -270 Solving -565 + x = -270 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '565' to each side of the equation. -565 + 565 + x = -270 + 565 Combine like terms: -565 + 565 = 0 0 + x = -270 + 565 x = -270 + 565 Combine like terms: -270 + 565 = 295 x = 295 Simplifying x = 295

Solution

The solution to the problem is based on the solutions from the subproblems. x = {835, 295}

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