3y^2+12y-32=0

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Solution for 3y^2+12y-32=0 equation:


Simplifying
3y2 + 12y + -32 = 0

Reorder the terms:
-32 + 12y + 3y2 = 0

Solving
-32 + 12y + 3y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
3 the coefficient of the squared term: 

Divide each side by '3'.
-10.66666667 + 4y + y2 = 0

Move the constant term to the right:

Add '10.66666667' to each side of the equation.
-10.66666667 + 4y + 10.66666667 + y2 = 0 + 10.66666667

Reorder the terms:
-10.66666667 + 10.66666667 + 4y + y2 = 0 + 10.66666667

Combine like terms: -10.66666667 + 10.66666667 = 0.00000000
0.00000000 + 4y + y2 = 0 + 10.66666667
4y + y2 = 0 + 10.66666667

Combine like terms: 0 + 10.66666667 = 10.66666667
4y + y2 = 10.66666667

The y term is 4y.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4y + 4 + y2 = 10.66666667 + 4

Reorder the terms:
4 + 4y + y2 = 10.66666667 + 4

Combine like terms: 10.66666667 + 4 = 14.66666667
4 + 4y + y2 = 14.66666667

Factor a perfect square on the left side:
(y + 2)(y + 2) = 14.66666667

Calculate the square root of the right side: 3.829708431

Break this problem into two subproblems by setting 
(y + 2) equal to 3.829708431 and -3.829708431.

Subproblem 1

y + 2 = 3.829708431 Simplifying y + 2 = 3.829708431 Reorder the terms: 2 + y = 3.829708431 Solving 2 + y = 3.829708431 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + y = 3.829708431 + -2 Combine like terms: 2 + -2 = 0 0 + y = 3.829708431 + -2 y = 3.829708431 + -2 Combine like terms: 3.829708431 + -2 = 1.829708431 y = 1.829708431 Simplifying y = 1.829708431

Subproblem 2

y + 2 = -3.829708431 Simplifying y + 2 = -3.829708431 Reorder the terms: 2 + y = -3.829708431 Solving 2 + y = -3.829708431 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + y = -3.829708431 + -2 Combine like terms: 2 + -2 = 0 0 + y = -3.829708431 + -2 y = -3.829708431 + -2 Combine like terms: -3.829708431 + -2 = -5.829708431 y = -5.829708431 Simplifying y = -5.829708431

Solution

The solution to the problem is based on the solutions from the subproblems. y = {1.829708431, -5.829708431}

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