okay so im trying to figureout how i can get some numbers only using the numbers : 9,7,5,1 you can use any symbols like adding or substracting or square rooting etc but u gotta use each number only once and you gotta use all four of them. the numbers that i am trying to figure out are : 7,30,36,46,54,55,66,71,72,83,84,86,89,92-96,100 i would greatly appreciate if you could help me with this thanks.

for example:45=7x5+9+1

or 82= 9^(7-5)+1