2y^2-14y+28=y^2-36y+36

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Solution for 2y^2-14y+28=y^2-36y+36 equation:


Simplifying
2y2 + -14y + 28 = y2 + -36y + 36

Reorder the terms:
28 + -14y + 2y2 = y2 + -36y + 36

Reorder the terms:
28 + -14y + 2y2 = 36 + -36y + y2

Solving
28 + -14y + 2y2 = 36 + -36y + y2

Solving for variable 'y'.

Reorder the terms:
28 + -36 + -14y + 36y + 2y2 + -1y2 = 36 + -36y + y2 + -36 + 36y + -1y2

Combine like terms: 28 + -36 = -8
-8 + -14y + 36y + 2y2 + -1y2 = 36 + -36y + y2 + -36 + 36y + -1y2

Combine like terms: -14y + 36y = 22y
-8 + 22y + 2y2 + -1y2 = 36 + -36y + y2 + -36 + 36y + -1y2

Combine like terms: 2y2 + -1y2 = 1y2
-8 + 22y + 1y2 = 36 + -36y + y2 + -36 + 36y + -1y2

Reorder the terms:
-8 + 22y + 1y2 = 36 + -36 + -36y + 36y + y2 + -1y2

Combine like terms: 36 + -36 = 0
-8 + 22y + 1y2 = 0 + -36y + 36y + y2 + -1y2
-8 + 22y + 1y2 = -36y + 36y + y2 + -1y2

Combine like terms: -36y + 36y = 0
-8 + 22y + 1y2 = 0 + y2 + -1y2
-8 + 22y + 1y2 = y2 + -1y2

Combine like terms: y2 + -1y2 = 0
-8 + 22y + 1y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + 22y + 8 + y2 = 0 + 8

Reorder the terms:
-8 + 8 + 22y + y2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + 22y + y2 = 0 + 8
22y + y2 = 0 + 8

Combine like terms: 0 + 8 = 8
22y + y2 = 8

The y term is 22y.  Take half its coefficient (11).
Square it (121) and add it to both sides.

Add '121' to each side of the equation.
22y + 121 + y2 = 8 + 121

Reorder the terms:
121 + 22y + y2 = 8 + 121

Combine like terms: 8 + 121 = 129
121 + 22y + y2 = 129

Factor a perfect square on the left side:
(y + 11)(y + 11) = 129

Calculate the square root of the right side: 11.357816692

Break this problem into two subproblems by setting 
(y + 11) equal to 11.357816692 and -11.357816692.

Subproblem 1

y + 11 = 11.357816692 Simplifying y + 11 = 11.357816692 Reorder the terms: 11 + y = 11.357816692 Solving 11 + y = 11.357816692 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + y = 11.357816692 + -11 Combine like terms: 11 + -11 = 0 0 + y = 11.357816692 + -11 y = 11.357816692 + -11 Combine like terms: 11.357816692 + -11 = 0.357816692 y = 0.357816692 Simplifying y = 0.357816692

Subproblem 2

y + 11 = -11.357816692 Simplifying y + 11 = -11.357816692 Reorder the terms: 11 + y = -11.357816692 Solving 11 + y = -11.357816692 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + y = -11.357816692 + -11 Combine like terms: 11 + -11 = 0 0 + y = -11.357816692 + -11 y = -11.357816692 + -11 Combine like terms: -11.357816692 + -11 = -22.357816692 y = -22.357816692 Simplifying y = -22.357816692

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.357816692, -22.357816692}

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