Question 261458
I am going to assume that it is 
{{{(1-y)/(4y+4)* (y+1)/(y+4)}}}

even though you didn't include the proper ()
as in (1-y)/(4y+4)* (y+1)/(y+4)
{{{(1-y)/4(y+1)* (y+1)/(y+4)}}}
{{{(1-y)/4cross(y+1)* cross(y+1)/(y+4)}}}
{{{(1-y)/(4*(y+4))}}}