Question

21. Add:
3pq + 2pr - 4qr; - Pq + pr + 2qr and 4pq
3pr + 2qr​

Answer 1

Answer:

(3pq+2pr-4qr)+(-pq+pr+2qr)+(4pq+3pr+2qr)

(3pq-pq+4pq)+(2pr+pr+3pr)+(-4qr+2qr+2qr)

(6pq)+(6pr)+(0)

6pq+6pr

6(pq+pr)

Step-by-step explanation:

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