Answer:
A trinomial of degree 5
Explanation:
A monomial has only 1 term
A binomial has 2 terms
A trinomial has 3 terms
4
+ 3x³ - 7x ← has 3 terms and is therefore a trinomial
The degree of a polynomial is determined by the largest exponent of the variable in the expression
4
is the term with the largest exponent in the expression
Hence a polynomial of degree 5