210y-y^2=6000

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Solution for 210y-y^2=6000 equation:


Simplifying
210y + -1y2 = 6000

Solving
210y + -1y2 = 6000

Solving for variable 'y'.

Reorder the terms:
-6000 + 210y + -1y2 = 6000 + -6000

Combine like terms: 6000 + -6000 = 0
-6000 + 210y + -1y2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
6000 + -210y + y2 = 0

Move the constant term to the right:

Add '-6000' to each side of the equation.
6000 + -210y + -6000 + y2 = 0 + -6000

Reorder the terms:
6000 + -6000 + -210y + y2 = 0 + -6000

Combine like terms: 6000 + -6000 = 0
0 + -210y + y2 = 0 + -6000
-210y + y2 = 0 + -6000

Combine like terms: 0 + -6000 = -6000
-210y + y2 = -6000

The y term is -210y.  Take half its coefficient (-105).
Square it (11025) and add it to both sides.

Add '11025' to each side of the equation.
-210y + 11025 + y2 = -6000 + 11025

Reorder the terms:
11025 + -210y + y2 = -6000 + 11025

Combine like terms: -6000 + 11025 = 5025
11025 + -210y + y2 = 5025

Factor a perfect square on the left side:
(y + -105)(y + -105) = 5025

Calculate the square root of the right side: 70.887234394

Break this problem into two subproblems by setting 
(y + -105) equal to 70.887234394 and -70.887234394.

Subproblem 1

y + -105 = 70.887234394 Simplifying y + -105 = 70.887234394 Reorder the terms: -105 + y = 70.887234394 Solving -105 + y = 70.887234394 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '105' to each side of the equation. -105 + 105 + y = 70.887234394 + 105 Combine like terms: -105 + 105 = 0 0 + y = 70.887234394 + 105 y = 70.887234394 + 105 Combine like terms: 70.887234394 + 105 = 175.887234394 y = 175.887234394 Simplifying y = 175.887234394

Subproblem 2

y + -105 = -70.887234394 Simplifying y + -105 = -70.887234394 Reorder the terms: -105 + y = -70.887234394 Solving -105 + y = -70.887234394 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '105' to each side of the equation. -105 + 105 + y = -70.887234394 + 105 Combine like terms: -105 + 105 = 0 0 + y = -70.887234394 + 105 y = -70.887234394 + 105 Combine like terms: -70.887234394 + 105 = 34.112765606 y = 34.112765606 Simplifying y = 34.112765606

Solution

The solution to the problem is based on the solutions from the subproblems. y = {175.887234394, 34.112765606}

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