y^2-12y+3=5

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Solution for y^2-12y+3=5 equation:


Simplifying
y2 + -12y + 3 = 5

Reorder the terms:
3 + -12y + y2 = 5

Solving
3 + -12y + y2 = 5

Solving for variable 'y'.

Reorder the terms:
3 + -5 + -12y + y2 = 5 + -5

Combine like terms: 3 + -5 = -2
-2 + -12y + y2 = 5 + -5

Combine like terms: 5 + -5 = 0
-2 + -12y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -12y + 2 + y2 = 0 + 2

Reorder the terms:
-2 + 2 + -12y + y2 = 0 + 2

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

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

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 = 2 + 36

Reorder the terms:
36 + -12y + y2 = 2 + 36

Combine like terms: 2 + 36 = 38
36 + -12y + y2 = 38

Factor a perfect square on the left side:
(y + -6)(y + -6) = 38

Calculate the square root of the right side: 6.164414003

Break this problem into two subproblems by setting 
(y + -6) equal to 6.164414003 and -6.164414003.

Subproblem 1

y + -6 = 6.164414003 Simplifying y + -6 = 6.164414003 Reorder the terms: -6 + y = 6.164414003 Solving -6 + y = 6.164414003 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 = 6.164414003 + 6 Combine like terms: -6 + 6 = 0 0 + y = 6.164414003 + 6 y = 6.164414003 + 6 Combine like terms: 6.164414003 + 6 = 12.164414003 y = 12.164414003 Simplifying y = 12.164414003

Subproblem 2

y + -6 = -6.164414003 Simplifying y + -6 = -6.164414003 Reorder the terms: -6 + y = -6.164414003 Solving -6 + y = -6.164414003 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 = -6.164414003 + 6 Combine like terms: -6 + 6 = 0 0 + y = -6.164414003 + 6 y = -6.164414003 + 6 Combine like terms: -6.164414003 + 6 = -0.164414003 y = -0.164414003 Simplifying y = -0.164414003

Solution

The solution to the problem is based on the solutions from the subproblems. y = {12.164414003, -0.164414003}

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