# Chapter 5 - Section 5.3 - Introduction to Polynomials - Exercise Set - Page 363: 8

4th degree; None of these

#### Work Step by Step

$a+5a^{2}+3a^{3}-4a^{4}$ This is a 4th degree polynomial, since the highest exponent present is $4$. Also, this is not a monomial, binomial or trinomial, since it has 4 terms.

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