6y^2-8y+12-11y^2-8y+6=

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Solution for 6y^2-8y+12-11y^2-8y+6= equation:


Simplifying
6y2 + -8y + 12 + -11y2 + -8y + 6 = 0

Reorder the terms:
12 + 6 + -8y + -8y + 6y2 + -11y2 = 0

Combine like terms: 12 + 6 = 18
18 + -8y + -8y + 6y2 + -11y2 = 0

Combine like terms: -8y + -8y = -16y
18 + -16y + 6y2 + -11y2 = 0

Combine like terms: 6y2 + -11y2 = -5y2
18 + -16y + -5y2 = 0

Solving
18 + -16y + -5y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
-3.6 + 3.2y + y2 = 0

Move the constant term to the right:

Add '3.6' to each side of the equation.
-3.6 + 3.2y + 3.6 + y2 = 0 + 3.6

Reorder the terms:
-3.6 + 3.6 + 3.2y + y2 = 0 + 3.6

Combine like terms: -3.6 + 3.6 = 0.0
0.0 + 3.2y + y2 = 0 + 3.6
3.2y + y2 = 0 + 3.6

Combine like terms: 0 + 3.6 = 3.6
3.2y + y2 = 3.6

The y term is 3.2y.  Take half its coefficient (1.6).
Square it (2.56) and add it to both sides.

Add '2.56' to each side of the equation.
3.2y + 2.56 + y2 = 3.6 + 2.56

Reorder the terms:
2.56 + 3.2y + y2 = 3.6 + 2.56

Combine like terms: 3.6 + 2.56 = 6.16
2.56 + 3.2y + y2 = 6.16

Factor a perfect square on the left side:
(y + 1.6)(y + 1.6) = 6.16

Calculate the square root of the right side: 2.481934729

Break this problem into two subproblems by setting 
(y + 1.6) equal to 2.481934729 and -2.481934729.

Subproblem 1

y + 1.6 = 2.481934729 Simplifying y + 1.6 = 2.481934729 Reorder the terms: 1.6 + y = 2.481934729 Solving 1.6 + y = 2.481934729 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1.6' to each side of the equation. 1.6 + -1.6 + y = 2.481934729 + -1.6 Combine like terms: 1.6 + -1.6 = 0.0 0.0 + y = 2.481934729 + -1.6 y = 2.481934729 + -1.6 Combine like terms: 2.481934729 + -1.6 = 0.881934729 y = 0.881934729 Simplifying y = 0.881934729

Subproblem 2

y + 1.6 = -2.481934729 Simplifying y + 1.6 = -2.481934729 Reorder the terms: 1.6 + y = -2.481934729 Solving 1.6 + y = -2.481934729 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1.6' to each side of the equation. 1.6 + -1.6 + y = -2.481934729 + -1.6 Combine like terms: 1.6 + -1.6 = 0.0 0.0 + y = -2.481934729 + -1.6 y = -2.481934729 + -1.6 Combine like terms: -2.481934729 + -1.6 = -4.081934729 y = -4.081934729 Simplifying y = -4.081934729

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.881934729, -4.081934729}

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