y^2+12y+4=0

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Solution for y^2+12y+4=0 equation:


Simplifying
y2 + 12y + 4 = 0

Reorder the terms:
4 + 12y + y2 = 0

Solving
4 + 12y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + 12y + -4 + y2 = 0 + -4

Reorder the terms:
4 + -4 + 12y + y2 = 0 + -4

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

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

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 = -4 + 36

Reorder the terms:
36 + 12y + y2 = -4 + 36

Combine like terms: -4 + 36 = 32
36 + 12y + y2 = 32

Factor a perfect square on the left side:
(y + 6)(y + 6) = 32

Calculate the square root of the right side: 5.656854249

Break this problem into two subproblems by setting 
(y + 6) equal to 5.656854249 and -5.656854249.

Subproblem 1

y + 6 = 5.656854249 Simplifying y + 6 = 5.656854249 Reorder the terms: 6 + y = 5.656854249 Solving 6 + y = 5.656854249 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 = 5.656854249 + -6 Combine like terms: 6 + -6 = 0 0 + y = 5.656854249 + -6 y = 5.656854249 + -6 Combine like terms: 5.656854249 + -6 = -0.343145751 y = -0.343145751 Simplifying y = -0.343145751

Subproblem 2

y + 6 = -5.656854249 Simplifying y + 6 = -5.656854249 Reorder the terms: 6 + y = -5.656854249 Solving 6 + y = -5.656854249 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 = -5.656854249 + -6 Combine like terms: 6 + -6 = 0 0 + y = -5.656854249 + -6 y = -5.656854249 + -6 Combine like terms: -5.656854249 + -6 = -11.656854249 y = -11.656854249 Simplifying y = -11.656854249

Solution

The solution to the problem is based on the solutions from the subproblems. y = {-0.343145751, -11.656854249}

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