If you multiply a binomial by a binomial how many terms are in the product before combining like terms? what about multiplying a monomial by a trinomial? two trinomials?

There will be four terms before combining like terms. Six when multiplying a monomial by a trinomial. And two trinomials will be nine terms.

i came across this and i found it funny that when you're bored you play hangman on so im going to guess a : )