In the following exercise, determine which are polynomial functions. For those that are, state the degree and leading coefficient. For those that are not, please explain why they are not polynomials. ()=3−5+172+12

()=−9+2

ℎ()=25−123+5−7

()=13

()=273+86‾‾‾‾‾‾‾‾‾‾‾√3

()=4−52

PLEASE HELP ME