Answer:
no because you have division by a variable
Step-by-step explanation:
If you have y + 2/y as an expression, this expression is not a polynomial expression because you have division by variable.
You are looking for an expression with only positive or 0 integer exponents.
Here are some examples of a polynomial:
5
5x+1
5x^2+x+1
-x
-x+1
3x^3+5x+1
4x^4+7x^2+x+1
and so on...
Here are some examples of expressions that aren't polynomials:
5+sqrt(x)
5+|x|
|x|-5
x^2+5|x|
5/x^3
6x^(-2)
and son on....