Question

Factor the four-term polynomial.

pq - 2r + pr - 2q

Answer 1

answers
(p - 2)(q + r)
(p - r)(q + 2)
(p + 2)(q - r)

Answer 2

Rearrange the terms and it might be easier to factor:
pq-2q + pr-2r Now remove the variable that is common to the first two terms, the q
q(p-2) +pr -2r now remove the common term in the last two terms, the r
q(p-2) + r(p-2) you are almost there you have two terms now and there is something common to both of them, the p-2.
(p-2)(q+r) looks familiar doesn't it.

Answer 3

thank you @radar