Answer
Explanation given below.
Work Step by Step
A polynomial is an expression containg one term, or the sum of several terms which have the form
term =(real number)$\times$(power of a variable)$\times$(power of a variable)$\times$...$\times$(power of a variable)
The terms can contain one or more variables.
A monomial is a polynomial that consists of one term only.
Examples of monomials:
$x,$
$4x^{2}y,$
$-2xy^{2}z^{4}$
