12.5x=50000+100x-0.05x^2

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Solution for 12.5x=50000+100x-0.05x^2 equation:


Simplifying
12.5x = 50000 + 100x + -0.05x2

Solving
12.5x = 50000 + 100x + -0.05x2

Solving for variable 'x'.

Reorder the terms:
-50000 + 12.5x + -100x + 0.05x2 = 50000 + 100x + -0.05x2 + -50000 + -100x + 0.05x2

Combine like terms: 12.5x + -100x = -87.5x
-50000 + -87.5x + 0.05x2 = 50000 + 100x + -0.05x2 + -50000 + -100x + 0.05x2

Reorder the terms:
-50000 + -87.5x + 0.05x2 = 50000 + -50000 + 100x + -100x + -0.05x2 + 0.05x2

Combine like terms: 50000 + -50000 = 0
-50000 + -87.5x + 0.05x2 = 0 + 100x + -100x + -0.05x2 + 0.05x2
-50000 + -87.5x + 0.05x2 = 100x + -100x + -0.05x2 + 0.05x2

Combine like terms: 100x + -100x = 0
-50000 + -87.5x + 0.05x2 = 0 + -0.05x2 + 0.05x2
-50000 + -87.5x + 0.05x2 = -0.05x2 + 0.05x2

Combine like terms: -0.05x2 + 0.05x2 = 0.00
-50000 + -87.5x + 0.05x2 = 0.00

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

Divide each side by '0.05'.
-1000000 + -1750x + x2 = 0

Move the constant term to the right:

Add '1000000' to each side of the equation.
-1000000 + -1750x + 1000000 + x2 = 0 + 1000000

Reorder the terms:
-1000000 + 1000000 + -1750x + x2 = 0 + 1000000

Combine like terms: -1000000 + 1000000 = 0
0 + -1750x + x2 = 0 + 1000000
-1750x + x2 = 0 + 1000000

Combine like terms: 0 + 1000000 = 1000000
-1750x + x2 = 1000000

The x term is -1750x.  Take half its coefficient (-875).
Square it (765625) and add it to both sides.

Add '765625' to each side of the equation.
-1750x + 765625 + x2 = 1000000 + 765625

Reorder the terms:
765625 + -1750x + x2 = 1000000 + 765625

Combine like terms: 1000000 + 765625 = 1765625
765625 + -1750x + x2 = 1765625

Factor a perfect square on the left side:
(x + -875)(x + -875) = 1765625

Calculate the square root of the right side: 1328.768226592

Break this problem into two subproblems by setting 
(x + -875) equal to 1328.768226592 and -1328.768226592.

Subproblem 1

x + -875 = 1328.768226592 Simplifying x + -875 = 1328.768226592 Reorder the terms: -875 + x = 1328.768226592 Solving -875 + x = 1328.768226592 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '875' to each side of the equation. -875 + 875 + x = 1328.768226592 + 875 Combine like terms: -875 + 875 = 0 0 + x = 1328.768226592 + 875 x = 1328.768226592 + 875 Combine like terms: 1328.768226592 + 875 = 2203.768226592 x = 2203.768226592 Simplifying x = 2203.768226592

Subproblem 2

x + -875 = -1328.768226592 Simplifying x + -875 = -1328.768226592 Reorder the terms: -875 + x = -1328.768226592 Solving -875 + x = -1328.768226592 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '875' to each side of the equation. -875 + 875 + x = -1328.768226592 + 875 Combine like terms: -875 + 875 = 0 0 + x = -1328.768226592 + 875 x = -1328.768226592 + 875 Combine like terms: -1328.768226592 + 875 = -453.768226592 x = -453.768226592 Simplifying x = -453.768226592

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2203.768226592, -453.768226592}

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