50y-y^2=51

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Solution for 50y-y^2=51 equation:


Simplifying
50y + -1y2 = 51

Solving
50y + -1y2 = 51

Solving for variable 'y'.

Reorder the terms:
-51 + 50y + -1y2 = 51 + -51

Combine like terms: 51 + -51 = 0
-51 + 50y + -1y2 = 0

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

Divide each side by '-1'.
51 + -50y + y2 = 0

Move the constant term to the right:

Add '-51' to each side of the equation.
51 + -50y + -51 + y2 = 0 + -51

Reorder the terms:
51 + -51 + -50y + y2 = 0 + -51

Combine like terms: 51 + -51 = 0
0 + -50y + y2 = 0 + -51
-50y + y2 = 0 + -51

Combine like terms: 0 + -51 = -51
-50y + y2 = -51

The y term is -50y.  Take half its coefficient (-25).
Square it (625) and add it to both sides.

Add '625' to each side of the equation.
-50y + 625 + y2 = -51 + 625

Reorder the terms:
625 + -50y + y2 = -51 + 625

Combine like terms: -51 + 625 = 574
625 + -50y + y2 = 574

Factor a perfect square on the left side:
(y + -25)(y + -25) = 574

Calculate the square root of the right side: 23.958297101

Break this problem into two subproblems by setting 
(y + -25) equal to 23.958297101 and -23.958297101.

Subproblem 1

y + -25 = 23.958297101 Simplifying y + -25 = 23.958297101 Reorder the terms: -25 + y = 23.958297101 Solving -25 + y = 23.958297101 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + y = 23.958297101 + 25 Combine like terms: -25 + 25 = 0 0 + y = 23.958297101 + 25 y = 23.958297101 + 25 Combine like terms: 23.958297101 + 25 = 48.958297101 y = 48.958297101 Simplifying y = 48.958297101

Subproblem 2

y + -25 = -23.958297101 Simplifying y + -25 = -23.958297101 Reorder the terms: -25 + y = -23.958297101 Solving -25 + y = -23.958297101 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + y = -23.958297101 + 25 Combine like terms: -25 + 25 = 0 0 + y = -23.958297101 + 25 y = -23.958297101 + 25 Combine like terms: -23.958297101 + 25 = 1.041702899 y = 1.041702899 Simplifying y = 1.041702899

Solution

The solution to the problem is based on the solutions from the subproblems. y = {48.958297101, 1.041702899}

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