Question

p(p-q) + q ( q – r) + r(r-p)​

Answer 1

Answer:

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

p²-pq + q²-qr + r²-pr

Therefore,answer = Thus the sum =p²+q²+r²-pq-qr-pr

Answer 2

p(p−q)+q(q−r)+r(r−p)

Distribute:

=(p)(p)+(p)(−q)+(q)(q)+(q)(−r)+(r)(r)+(r)(−p)

=p²+(−pq)+q²+(−qr)+r²+(−pr)

Answer:

=p²−pq−pr+q²−qr+r²