Question

Which expressions are monomials?

A. -4+6
B. b+2b+2
C.(x – 2x)^2
D. rs/2
E. 36x^2yz^3
F. a^x
G. x^1/3

Answer 1

A,C,E

Explanation:

Answer 2

Monomials are the expressions with one terms.

A.)
`-4+6 = 2`

Since, it has only one term. Therefore, it is a monomial.

B.)
`b+2b+2 = 3b+2`

Since, it has two terms. Therefore, it is not a monomial.

C.)
`(x-2x)^2 = (-x)^2=x^2`

Since, it has only one term. Therefore, it is a monomial.

D.)
`(rs)/(2)`

Since, it has only one term. Therefore, it is a monomial.

E.)
`36x^2yz^3`

Since, it has only one term. Therefore, it is a monomial.

F.)
`a^x`

Since, the variable is in the power. So it is not a monomial.

G.)
`x^(1)/(3)`

Since, the power is not a integer. Therefore, it is not a monomial.