5y+2=y^2-12y+4

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Solution for 5y+2=y^2-12y+4 equation:


Simplifying
5y + 2 = y2 + -12y + 4

Reorder the terms:
2 + 5y = y2 + -12y + 4

Reorder the terms:
2 + 5y = 4 + -12y + y2

Solving
2 + 5y = 4 + -12y + y2

Solving for variable 'y'.

Reorder the terms:
2 + -4 + 5y + 12y + -1y2 = 4 + -12y + y2 + -4 + 12y + -1y2

Combine like terms: 2 + -4 = -2
-2 + 5y + 12y + -1y2 = 4 + -12y + y2 + -4 + 12y + -1y2

Combine like terms: 5y + 12y = 17y
-2 + 17y + -1y2 = 4 + -12y + y2 + -4 + 12y + -1y2

Reorder the terms:
-2 + 17y + -1y2 = 4 + -4 + -12y + 12y + y2 + -1y2

Combine like terms: 4 + -4 = 0
-2 + 17y + -1y2 = 0 + -12y + 12y + y2 + -1y2
-2 + 17y + -1y2 = -12y + 12y + y2 + -1y2

Combine like terms: -12y + 12y = 0
-2 + 17y + -1y2 = 0 + y2 + -1y2
-2 + 17y + -1y2 = y2 + -1y2

Combine like terms: y2 + -1y2 = 0
-2 + 17y + -1y2 = 0

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

Divide each side by '-1'.
2 + -17y + y2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -17y + -2 + y2 = 0 + -2

Reorder the terms:
2 + -2 + -17y + y2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -17y + y2 = 0 + -2
-17y + y2 = 0 + -2

Combine like terms: 0 + -2 = -2
-17y + y2 = -2

The y term is -17y.  Take half its coefficient (-8.5).
Square it (72.25) and add it to both sides.

Add '72.25' to each side of the equation.
-17y + 72.25 + y2 = -2 + 72.25

Reorder the terms:
72.25 + -17y + y2 = -2 + 72.25

Combine like terms: -2 + 72.25 = 70.25
72.25 + -17y + y2 = 70.25

Factor a perfect square on the left side:
(y + -8.5)(y + -8.5) = 70.25

Calculate the square root of the right side: 8.381527307

Break this problem into two subproblems by setting 
(y + -8.5) equal to 8.381527307 and -8.381527307.

Subproblem 1

y + -8.5 = 8.381527307 Simplifying y + -8.5 = 8.381527307 Reorder the terms: -8.5 + y = 8.381527307 Solving -8.5 + y = 8.381527307 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '8.5' to each side of the equation. -8.5 + 8.5 + y = 8.381527307 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + y = 8.381527307 + 8.5 y = 8.381527307 + 8.5 Combine like terms: 8.381527307 + 8.5 = 16.881527307 y = 16.881527307 Simplifying y = 16.881527307

Subproblem 2

y + -8.5 = -8.381527307 Simplifying y + -8.5 = -8.381527307 Reorder the terms: -8.5 + y = -8.381527307 Solving -8.5 + y = -8.381527307 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '8.5' to each side of the equation. -8.5 + 8.5 + y = -8.381527307 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + y = -8.381527307 + 8.5 y = -8.381527307 + 8.5 Combine like terms: -8.381527307 + 8.5 = 0.118472693 y = 0.118472693 Simplifying y = 0.118472693

Solution

The solution to the problem is based on the solutions from the subproblems. y = {16.881527307, 0.118472693}

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