250x-2x^2=7812.5

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Solution for 250x-2x^2=7812.5 equation:


Simplifying
250x + -2x2 = 7812.5

Solving
250x + -2x2 = 7812.5

Solving for variable 'x'.

Reorder the terms:
-7812.5 + 250x + -2x2 = 7812.5 + -7812.5

Combine like terms: 7812.5 + -7812.5 = 0.0
-7812.5 + 250x + -2x2 = 0.0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
3906.25 + -125x + x2 = 0.0

Move the constant term to the right:

Add '-3906.25' to each side of the equation.
3906.25 + -125x + -3906.25 + x2 = 0.0 + -3906.25

Reorder the terms:
3906.25 + -3906.25 + -125x + x2 = 0.0 + -3906.25

Combine like terms: 3906.25 + -3906.25 = 0.00
0.00 + -125x + x2 = 0.0 + -3906.25
-125x + x2 = 0.0 + -3906.25

Combine like terms: 0.0 + -3906.25 = -3906.25
-125x + x2 = -3906.25

The x term is -125x.  Take half its coefficient (-62.5).
Square it (3906.25) and add it to both sides.

Add '3906.25' to each side of the equation.
-125x + 3906.25 + x2 = -3906.25 + 3906.25

Reorder the terms:
3906.25 + -125x + x2 = -3906.25 + 3906.25

Combine like terms: -3906.25 + 3906.25 = 0.00
3906.25 + -125x + x2 = 0.00

Factor a perfect square on the left side:
(x + -62.5)(x + -62.5) = 0.00

Calculate the square root of the right side: 0.00

Break this problem into two subproblems by setting 
(x + -62.5) equal to 0.00 and 0.00.

Subproblem 1

x + -62.5 = 0.00 Simplifying x + -62.5 = 0.00 Reorder the terms: -62.5 + x = 0.00 Solving -62.5 + x = 0.00 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '62.5' to each side of the equation. -62.5 + 62.5 + x = 0.00 + 62.5 Combine like terms: -62.5 + 62.5 = 0.0 0.0 + x = 0.00 + 62.5 x = 0.00 + 62.5 Combine like terms: 0.00 + 62.5 = 62.5 x = 62.5 Simplifying x = 62.5

Subproblem 2

x + -62.5 = 0.00 Simplifying x + -62.5 = 0.00 Reorder the terms: -62.5 + x = 0.00 Solving -62.5 + x = 0.00 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '62.5' to each side of the equation. -62.5 + 62.5 + x = 0.00 + 62.5 Combine like terms: -62.5 + 62.5 = 0.0 0.0 + x = 0.00 + 62.5 x = 0.00 + 62.5 Combine like terms: 0.00 + 62.5 = 62.5 x = 62.5 Simplifying x = 62.5

Solution

The solution to the problem is based on the solutions from the subproblems. x = {62.5, 62.5}

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