Question

Which of the following is a monomial?

A. 20x^9
B. 9/x
C. 11x – 9
D. 20x^9 – 7x

Answer 1

A.

Explanation:

20x^9

Answer 2

Mono means one, and so the equation will have one term with a power
`x^n` where n is a positive integer. A polynomial has many terms.

A. is a single term. this is the answer.

B. has a negative power, which means it is not considered as a monomial.

C. this has two terms. it is wrong

D. this has two terms. it is wrong as well.

A is the answer.