9514 1404 393
Answer:
Explanation:
A monomial is one term, which may be a constant. In the context of a polynomial, the literals in a term have non-negative integer exponents.
A fraction with a variable in the denominator is a rational expression, not considered to be a "term."
2/x and 5/y are not terms, so not monomials.
_____
Further explanation
In a larger context, a term is any mathematical expression that is to be considered as a unit. It may include radicals, rational expressions, even sums or differences. So, the expressions 2/x and 5/y may be considered to be terms in a different context than here. For example, we could say that ...
2x⁻¹ +5y⁻¹
is a 2-term expression, though it could not be part of any polynomial.