325=n(125-n)+50n

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Solution for 325=n(125-n)+50n equation:


Simplifying
325 = n(125 + -1n) + 50n
325 = (125 * n + -1n * n) + 50n
325 = (125n + -1n2) + 50n

Reorder the terms:
325 = 125n + 50n + -1n2

Combine like terms: 125n + 50n = 175n
325 = 175n + -1n2

Solving
325 = 175n + -1n2

Solving for variable 'n'.

Reorder the terms:
325 + -175n + n2 = 175n + -175n + -1n2 + n2

Combine like terms: 175n + -175n = 0
325 + -175n + n2 = 0 + -1n2 + n2
325 + -175n + n2 = -1n2 + n2

Combine like terms: -1n2 + n2 = 0
325 + -175n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-325' to each side of the equation.
325 + -175n + -325 + n2 = 0 + -325

Reorder the terms:
325 + -325 + -175n + n2 = 0 + -325

Combine like terms: 325 + -325 = 0
0 + -175n + n2 = 0 + -325
-175n + n2 = 0 + -325

Combine like terms: 0 + -325 = -325
-175n + n2 = -325

The n term is -175n.  Take half its coefficient (-87.5).
Square it (7656.25) and add it to both sides.

Add '7656.25' to each side of the equation.
-175n + 7656.25 + n2 = -325 + 7656.25

Reorder the terms:
7656.25 + -175n + n2 = -325 + 7656.25

Combine like terms: -325 + 7656.25 = 7331.25
7656.25 + -175n + n2 = 7331.25

Factor a perfect square on the left side:
(n + -87.5)(n + -87.5) = 7331.25

Calculate the square root of the right side: 85.622718948

Break this problem into two subproblems by setting 
(n + -87.5) equal to 85.622718948 and -85.622718948.

Subproblem 1

n + -87.5 = 85.622718948 Simplifying n + -87.5 = 85.622718948 Reorder the terms: -87.5 + n = 85.622718948 Solving -87.5 + n = 85.622718948 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '87.5' to each side of the equation. -87.5 + 87.5 + n = 85.622718948 + 87.5 Combine like terms: -87.5 + 87.5 = 0.0 0.0 + n = 85.622718948 + 87.5 n = 85.622718948 + 87.5 Combine like terms: 85.622718948 + 87.5 = 173.122718948 n = 173.122718948 Simplifying n = 173.122718948

Subproblem 2

n + -87.5 = -85.622718948 Simplifying n + -87.5 = -85.622718948 Reorder the terms: -87.5 + n = -85.622718948 Solving -87.5 + n = -85.622718948 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '87.5' to each side of the equation. -87.5 + 87.5 + n = -85.622718948 + 87.5 Combine like terms: -87.5 + 87.5 = 0.0 0.0 + n = -85.622718948 + 87.5 n = -85.622718948 + 87.5 Combine like terms: -85.622718948 + 87.5 = 1.877281052 n = 1.877281052 Simplifying n = 1.877281052

Solution

The solution to the problem is based on the solutions from the subproblems. n = {173.122718948, 1.877281052}

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