A dollhouse has a volume given by the trinomial y^3 - 5y^2 - 6y. What are possible dimensions of the box?

Question

I've been having trouble with this question all day. Can somebody help me?

Answer 1

factor the polynomial and you have

y(y-6)(y+1)
so, as long as y>6 some possible dimensions are

7x1x8
8x2x9
...

Answer 2

These are the answer choices
y,y+6, and y-1
y,y-6, and y-1
y,y+6, and y+1
y,y-6, and y+1

Answer 3

I'm not sure how to get the answers above me

Answer 4

Can you not? My factorization gives the three dimensions. Look at the last choice.