Find the degree of the given polynomial and determine whether the polynomial is a​ monomial, binomial,​ trinomial, or none of these.

9 xz Superscript 5 Baseline plus 9 x Superscript 6 Baseline z plus 2 xz squared
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Part 1
The degree of the polynomial is
  
enter your response here.
Part 2
Is 9 xz Superscript 5 Baseline plus 9 x Superscript 6 Baseline z plus 2 xz squared a​ monomial, binomial,​ trinomial, or none of​ these?
monomial
binomial
trinomial
none of these

Part 1: The degree of the polynomial is 7.

Part 2: The given polynomial is a trinomial.