Question

Factor the four-term polynomial.

pq - 3r + pr - 3q.
(p - 3)(q + r)
(p - r)(q + 3)
(p + 3)(q - r)

Answer 1

Rewrite it as
pq-3q +pr - 3r
q(p-3) + r(p-3)
(q+r) (p-3)

Answer 2

ok thanks

Answer 3

yw :)