The last one all real numbers greater than or equal to -3
Write "st div. by 6r" as
st
-------
6r
45s 15s 3s
If r =5 and t = 45, but s is unknown, then we get --------- = --------- = -------
6(r) 2(5) 2
I think its C , 15% but im not sure
Expand to get 35x^3+49x^2-20x-28
