simplify: (y+1)(y/1-y^2)

Question

which answer:

A. Y/y-1
B. y/1-y
C. y+1/y-1
D. -1

this is what i got y+1/1* Y/1-y^2=-1

Answer 1

again, your lack of brackets make the question ambiguous.
The way you typed it ...
why would you write y/1 that would simply be y
so you really have:
(y+1)(y - y^2)
= y^2 - y^3 + y - y^2
= -y^3 + y

if you meant:
(y+1)(y/(1-y^2)
= y(y+1)/((1-y)(1+y) )
= y/(1-y) , y ≠ -1

Answer 2

how do you do it