It is a binomial with degree 3
Step-by-step explanation:
It has two terms: (−3xy2) and (5x2y) → it is a binomial
The degree of an expression is the largest sum of exponents of variables for any term in the expression.
−3xy2=−3x1y2 has a sum of exponents of variables =3
5x2y=5x2y1 also has a sum of exponents of variables =3
→ the expression has degree 3