y^2+17=12*y

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Solution for y^2+17=12*y equation:


Simplifying
y2 + 17 = 12y

Reorder the terms:
17 + y2 = 12y

Solving
17 + y2 = 12y

Solving for variable 'y'.

Reorder the terms:
17 + -12y + y2 = 12y + -12y

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

Begin completing the square.

Move the constant term to the right:

Add '-17' to each side of the equation.
17 + -12y + -17 + y2 = 0 + -17

Reorder the terms:
17 + -17 + -12y + y2 = 0 + -17

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

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

The y term is -12y.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12y + 36 + y2 = -17 + 36

Reorder the terms:
36 + -12y + y2 = -17 + 36

Combine like terms: -17 + 36 = 19
36 + -12y + y2 = 19

Factor a perfect square on the left side:
(y + -6)(y + -6) = 19

Calculate the square root of the right side: 4.358898944

Break this problem into two subproblems by setting 
(y + -6) equal to 4.358898944 and -4.358898944.

Subproblem 1

y + -6 = 4.358898944 Simplifying y + -6 = 4.358898944 Reorder the terms: -6 + y = 4.358898944 Solving -6 + y = 4.358898944 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + y = 4.358898944 + 6 Combine like terms: -6 + 6 = 0 0 + y = 4.358898944 + 6 y = 4.358898944 + 6 Combine like terms: 4.358898944 + 6 = 10.358898944 y = 10.358898944 Simplifying y = 10.358898944

Subproblem 2

y + -6 = -4.358898944 Simplifying y + -6 = -4.358898944 Reorder the terms: -6 + y = -4.358898944 Solving -6 + y = -4.358898944 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + y = -4.358898944 + 6 Combine like terms: -6 + 6 = 0 0 + y = -4.358898944 + 6 y = -4.358898944 + 6 Combine like terms: -4.358898944 + 6 = 1.641101056 y = 1.641101056 Simplifying y = 1.641101056

Solution

The solution to the problem is based on the solutions from the subproblems. y = {10.358898944, 1.641101056}

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