## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$$(-9x)(2x^4) \\ (-18x^2)(x^3) \\ (-9x^4)(2x)$$
We are looking for three factors of the monomial, so we need three sets of two values that each multiply to get the original monomial. Some examples include: $$(-9x)(2x^4) \\ (-18x^2)(x^3) \\ (-9x^4)(2x)$$