10.1 Exercise 4

Determine whether each polynomial is a monomial, binomial, trinomial, or other polynomial:

1. ⓐ $8 x^{2} - 7 x - 9$
2. ⓑ $−5 a^{4}$
3. ⓒ $x^{4} - 7 x^{3} - 6 x^{2} + 5 x + 2$
4. ⓓ $11 - 4 y^{3}$
5. ⓔ $n$