Chapter 8.1, Problem 21PPS

To determine

To find: Whether the expression $21$ is a polynomial or not. If it is a polynomial, find the degree and determine if it is a monomial, binomial, or trinomial.

Answer to Problem 21PPS

Yes, it is a polynomial

Degree of the polynomial is $0$

It is a monomial

Explanation of Solution

Given:

  $21$

Calculation:

The given expression is $21$

The exponent of a polynomial must be a whole number. Exponent can never be negative, square root, any fractional number and no variable should be in the denominator.

A polynomial can have only a constant as well.

Since, 21 is a constant.

Hence, it is a polynomial.

The degree of a polynomial is the highest exponent. So, the degree is $0$

And since, it has only one term. So, it is a monomial.