## Introductory Algebra for College Students (7th Edition)

The number 3 is a FACTOR of both 9 and 12. (used as a noun) We can use this fact to FACTOR the expression $9x+12.$ (used as a verb) (sample answer)
A factor, a multiple... (nouns). Factoring an expression , to factor a polynomial ...(verbs). Example: The number 3 is a FACTOR (noun) of both 9 and 12. We can use this fact to FACTOR (verb) the expression $9x+12.$