Plzzz asap with 4 questions will mark as brainliest

1.which expressions are polynomials?

select each correct answer.

a.2 + s

b. x^2−√x+2

c. y

d.4x³ + y

2.which description is correct for the polynomial 4x² +3x +5?

a. cubic trinomial

b. cubic binomial

c. quadratic trinomial

d. quartic monomial

3.which description is correct for the polynomial −5x^3−4x+1 ?

a. quadratic trinomial

b. cubic trinomial

c. cubic monomial

d. cubic binomial
4.what is the degree of the polynomial 3xy^2z−2z^5+2/3y^2z^4 ?

a.2

b.4

c.5

d.6