Question

add the following: p+q-r, p-q+r, pq​

Answer 1

Answer:

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p(p−q),q(q−r),r(r−p)

⇒p(p−q)+q(q−r)+r(r−p)

⇒p2−pq+q2−qr+r2−rp

Thus the sum =p2+q2+r2−pq−qr−pr

Step-by-step explanation:

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