## College Algebra (10th Edition)

RECALL: A monomial is a product of a constant and some variable/s whose exponents are nonnegative integers. Using the rule $\dfrac{1}{x} = x^{-1}$, the given expression is equivalent to: $=8 \cdot x^{-1} \\=8x^{-1}$ The exponent of the variable is $-1$, which is not a whole number. Thus, the expression is not a monomial.