Determine whether each expression is a polynomial. if it is a polynomial find the degree and determine whether it is monomial, or binomial or trinomial

2.) Yes, it's a trinomial and the degree should be 2
4.) No
6.) No because 5q is raised to a negative exponent

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?