Factors go into numbers, numbers go into multiples.
http://wiki.answers.com/Q/How_are_factor_and_multi...

1. Distribute all the extra coefficients out of the trinomial. An extra coefficient is essentially a multiple of all the coefficients. Given coefficients of 3, 6 and 9, for instance
http://www.ehow.com/how_8785878_factortrinomials...

Multiple when you multiply numbers by a number. Factor is the
http://www.chacha.com/question/whatisthediffere...

4 x 4 = 16. 4 is the factor, 16 is the multiple.
http://answers.yahoo.com/question/index?qid=201209...
