hello
a monomial is an expression made of a single term,
a binomial is an expression made of two terms while a trinomial consists of three terms
in this question, we're faced with an expression that has three terms which are x, y and z
[tex]\begin{gathered} \text{first term = 4x}^2 \\ \text{second term = y} \\ \text{third term = z}^4 \end{gathered}[/tex]from the above details, the expression is a trinomial
