Question

simplify p(p-q)+q(p-q)

Answer 1

Heya

p2 -pq +pq -q2
p2- q2

(p+q) (p-q)

Answer 2

(p-q) (p+q). {(a²-b²=(a+b) (a-b)}

(p) ²-(q) ²

I hope this much will help you