How do you multiply the polynomial #(3x^3+4x^2-5)# by the monomial #17x#?
Do this in exactly the same way as a monomial x binomial.
Use the distributive law across the bracket.
The same principle and process applies, no matter how many terms there are in a bracket.
A bracket with 12 terms in it is not more difficult to multiply into than a bracket with 2 terms! One just takes longer than the other!