(Algebra II) help me solve this problem? step by step please

Question

imstuck · Answer

That file is not viewable it says.  It doesn't open anything.  Repost somehow, ok?

imstuck · Answer

No, it tells me the same thing as the other link.  It says, "Sorry, you cannot view or download the file at this time."

anonymous · Answer

attachment

anonymous · Answer

@IMStuck

phi · Answer

notice the bottom is y^2 -1 which is a 
difference of squares.  It factors like this
$$ (a^2 - b^2) = (a+b)(a-b) $$
can you factor the bottom? what do you get ?

anonymous · Answer

the bottom is y^2-1? Maybe i gave you the wrong image. The bottom is y^2-9 and when i factor it i get (y-3)(y+3) @phi

anonymous · Answer

i just dont know how to do the top

phi · Answer

oh, I typed 1 instead of 9.  but you have the right idea.

If this simplifies , it's because either (y-3)  or (y+3) divides evenly into the top
I would try dividing one of them into the top using polynomial division or synthetic division.  try y-3.  Does it divide evenly?

anonymous · Answer

how do i do tht