Question

p
$p {}^{2} - 3pq + 2q {}^{2}$

Answer 1

p^2 - 3pq + 2q^2

= p^2 - 2pq + q^2 + q^2 - pq

= (p-q)^2 + q (q-p)

= (p - q) (p-2q)