y^2+14=18y

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Solution for y^2+14=18y equation:


Simplifying
y2 + 14 = 18y

Reorder the terms:
14 + y2 = 18y

Solving
14 + y2 = 18y

Solving for variable 'y'.

Reorder the terms:
14 + -18y + y2 = 18y + -18y

Combine like terms: 18y + -18y = 0
14 + -18y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-14' to each side of the equation.
14 + -18y + -14 + y2 = 0 + -14

Reorder the terms:
14 + -14 + -18y + y2 = 0 + -14

Combine like terms: 14 + -14 = 0
0 + -18y + y2 = 0 + -14
-18y + y2 = 0 + -14

Combine like terms: 0 + -14 = -14
-18y + y2 = -14

The y term is -18y.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18y + 81 + y2 = -14 + 81

Reorder the terms:
81 + -18y + y2 = -14 + 81

Combine like terms: -14 + 81 = 67
81 + -18y + y2 = 67

Factor a perfect square on the left side:
(y + -9)(y + -9) = 67

Calculate the square root of the right side: 8.185352772

Break this problem into two subproblems by setting 
(y + -9) equal to 8.185352772 and -8.185352772.

Subproblem 1

y + -9 = 8.185352772 Simplifying y + -9 = 8.185352772 Reorder the terms: -9 + y = 8.185352772 Solving -9 + y = 8.185352772 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + y = 8.185352772 + 9 Combine like terms: -9 + 9 = 0 0 + y = 8.185352772 + 9 y = 8.185352772 + 9 Combine like terms: 8.185352772 + 9 = 17.185352772 y = 17.185352772 Simplifying y = 17.185352772

Subproblem 2

y + -9 = -8.185352772 Simplifying y + -9 = -8.185352772 Reorder the terms: -9 + y = -8.185352772 Solving -9 + y = -8.185352772 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + y = -8.185352772 + 9 Combine like terms: -9 + 9 = 0 0 + y = -8.185352772 + 9 y = -8.185352772 + 9 Combine like terms: -8.185352772 + 9 = 0.814647228 y = 0.814647228 Simplifying y = 0.814647228

Solution

The solution to the problem is based on the solutions from the subproblems. y = {17.185352772, 0.814647228}

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