2y^2+6y-2=0

Solution for 2y^2+6y-2=0 equation:

Simplifying
2y2 + 6y + -2 = 0

Reorder the terms:
-2 + 6y + 2y2 = 0

Solving
-2 + 6y + 2y2 = 0

Solving for variable 'y'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-1 + 3y + y2) = 0

Ignore the factor 2.
Subproblem 1
Set the factor '(-1 + 3y + y2)' equal to zero and attempt to solve:

Simplifying
-1 + 3y + y2 = 0

Solving
-1 + 3y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 3y + 1 + y2 = 0 + 1

Reorder the terms:
-1 + 1 + 3y + y2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 3y + y2 = 0 + 1
3y + y2 = 0 + 1

Combine like terms: 0 + 1 = 1
3y + y2 = 1

The y term is 3y.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3y + 2.25 + y2 = 1 + 2.25

Reorder the terms:
2.25 + 3y + y2 = 1 + 2.25

Combine like terms: 1 + 2.25 = 3.25
2.25 + 3y + y2 = 3.25

Factor a perfect square on the left side:
(y + 1.5)(y + 1.5) = 3.25

Calculate the square root of the right side: 1.802775638

Break this problem into two subproblems by setting 
(y + 1.5) equal to 1.802775638 and -1.802775638.

Subproblem 1
y + 1.5 = 1.802775638

Simplifying
y + 1.5 = 1.802775638

Reorder the terms:
1.5 + y = 1.802775638

Solving
1.5 + y = 1.802775638

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-1.5' to each side of the equation.
1.5 + -1.5 + y = 1.802775638 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + y = 1.802775638 + -1.5
y = 1.802775638 + -1.5

Combine like terms: 1.802775638 + -1.5 = 0.302775638
y = 0.302775638

Simplifying
y = 0.302775638

Subproblem 2
y + 1.5 = -1.802775638

Simplifying
y + 1.5 = -1.802775638

Reorder the terms:
1.5 + y = -1.802775638

Solving
1.5 + y = -1.802775638

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-1.5' to each side of the equation.
1.5 + -1.5 + y = -1.802775638 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + y = -1.802775638 + -1.5
y = -1.802775638 + -1.5

Combine like terms: -1.802775638 + -1.5 = -3.302775638
y = -3.302775638

Simplifying
y = -3.302775638

Solution
The solution to the problem is based on the solutions
from the subproblems.
y = {0.302775638, -3.302775638}
Solution
y = {0.302775638, -3.302775638}