Can u help with all of these please with the steps.

Answer:
b,d,e are not polynomials
Step-by-step explanation:
b) It is not a polynomial because y has negative power.
Polynomial have only whole numbers as power
d) It is not a polynomial because power of x is 1/2
[tex]\sqrt{x}=x^{\dfrac{1}{2}}[/tex]
e) It is not a polynomial.