Read the questions below and answer each part carefully.
a. (i) Define a polynomial in one variable.
b. (ii) For the polynomial 7x3−4x+5 write:
(a) the number of terms,
(b) the coefficient of x3,
(c) the constant term, and
(d) its degree.
c. (iii) What name is given to a polynomial that contains exactly three non‐zero terms?