4y^2+4y-6=0

Solution for 4y^2+4y-6=0 equation:

Simplifying
4y2 + 4y + -6 = 0

Reorder the terms:
-6 + 4y + 4y2 = 0

Solving
-6 + 4y + 4y2 = 0

Solving for variable 'y'.

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

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

Simplifying
-3 + 2y + 2y2 = 0

Solving
-3 + 2y + 2y2 = 0

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

Divide each side by '2'.
-1.5 + y + y2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + y + 1.5 + y2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + y + y2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + y + y2 = 0 + 1.5
y + y2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
y + y2 = 1.5

The y term is y.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + y2 = 1.5 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + y2 = 1.5 + 0.25

Combine like terms: 1.5 + 0.25 = 1.75
1.25 + y2 = 1.75

Factor a perfect square on the left side:
(y + 0.5)(y + 0.5) = 1.75

Calculate the square root of the right side: 1.322875656

Break this problem into two subproblems by setting 
(y + 0.5) equal to 1.322875656 and -1.322875656.

Subproblem 1
y + 0.5 = 1.322875656

Simplifying
y + 0.5 = 1.322875656

Reorder the terms:
0.5 + y = 1.322875656

Solving
0.5 + y = 1.322875656

Solving for variable 'y'.

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

Add '-0.5' to each side of the equation.
0.5 + -0.5 + y = 1.322875656 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + y = 1.322875656 + -0.5
y = 1.322875656 + -0.5

Combine like terms: 1.322875656 + -0.5 = 0.822875656
y = 0.822875656

Simplifying
y = 0.822875656

Subproblem 2
y + 0.5 = -1.322875656

Simplifying
y + 0.5 = -1.322875656

Reorder the terms:
0.5 + y = -1.322875656

Solving
0.5 + y = -1.322875656

Solving for variable 'y'.

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

Add '-0.5' to each side of the equation.
0.5 + -0.5 + y = -1.322875656 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + y = -1.322875656 + -0.5
y = -1.322875656 + -0.5

Combine like terms: -1.322875656 + -0.5 = -1.822875656
y = -1.822875656

Simplifying
y = -1.822875656

Solution
The solution to the problem is based on the solutions
from the subproblems.
y = {0.822875656, -1.822875656}
Solution
y = {0.822875656, -1.822875656}