Simplity (P + q + R) (P- q +R) +Pq - PR
Answers
Answered by
4
Step-by-step explanation:
(pq−qr+pr)(pq+qr)−(pr+pq)(p+q+r)=p
2
q
2
−q
2
r
2
+p
2
qr+pqr
2
−p
2
q−pq
2
−p
2
r+pr
2
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