how would i evaluate these two limits? they're on my textbook but half of the page is ripped off with the answers..

lim x-16 / (quad root of x) - 2

x -> 16

and

lim (square root of 1-x) - 1 / (square root of 4-x) - 2

x -> 0

i'm not sure if it's called "quad" root, sorry!

thanks!