Which expressions are polynomials?
Select each correct answer.

answer:35x^2
Step-by-step explanation:
the first one is not b/c its x/5
the second one is not b/c has a square root
the last one it has negative exponents
Answer:
Step-by-step explanation:
By definition, the power of each term in a polynomial must be greater than or equal to 0.
So x/5+2 is a polynomial
4x+sqrt(x)-1 is not because sqrt(x) is x^(1/2)
35x^2 is a polynomial
7x^7-x^(-5) is not because -5 is less than 0.