Question

Which of the following is a monomial?

• A. $x^{\frac{1}{2}}$
• B. 2x - 1
• C. 8
• D. $x^{-1}$

Answer 1

The correct option is C 8

A monomial is an expression which contains only one term. For example 3xy.

$\Rightarrow 2x-1$ is not a monomial as it has two terms 2x and (-1).

A monomial can be a constant, a variable or product of constant and variables.

$\Rightarrow$ 8 is a monomial.

A monomial should have non negative integer exponents.
$\Rightarrow x^{\frac{1}{2}}$ and $x^{-1}$ are not monomials.