Give an example of a polynomial, which is:
(i) monomial of degree 1
(ii) binomial of degree 20
(iii) trinomial of degree 2
(i) an example of a monomial of degree 1 is 5x
(ii) an example of a monomial of degree y20 + 9
(iii) trinomial of degree 2 is 1 + x + x2