*PLEASE HELP*
Which expressions are monomials?
1. -4+6
2. b+2b+2
3. (x-2x)^2
4. rs/t
5. 36x^2yz^3
6. a^x
7. x^1/3

PLEASE HELP Which expressions are monomials 1 46 2 b2b2 3 x2x2 4 rst 5 36x2yz3 6 ax 7 x13 class=