how would i figure this out

https://prnt.sc/pnw7ve

What you have to do is factor the top and then cancel.

Here is the answer (Scroll down if you want to view it)

(x-3)(x+3)/(x+3) limx-->-3

cancel (x+3) with (x+3)

we are left with (x-3) limx-->-3

subsitute

-3-3=-6