Question

find the sum of p(p-q), q(q-r) and r(r-p)​

Answer 1

= p(p-q) + q(q-r) + r(r-p)

= p^2 - pq + q^2 - qr + r^2 - pr

= p^2 + q^2 + r^2 - (pq + qr + pr)

It can't be simplified anymore

Answer 2

Answer:

Step-by-step explanation: