Answer:
B and F
Step-by-step explanation:
Trinomials are polynomials with 3 terms
A has only one term → monomial
B has 3 terms → trinomial
C has 2 terms → binomial
D has one term → monomial
E has 2 terms → binomial
F has 3 terms → trinomial
So you would set this problem up as 10 x 9 x 8 x 7, since none of the digits can be repeated. There are 5,040 4 digit passcodes possible.
5000-97
= 4903
to check= 4903+97=5000