1.

If we add, 7pq +5pq -3rp, 4qr +9rp -4q and -3pr +5p -2pq. then the answer is ​

Answer»

Step-by-step EXPLANATION:[7pq +5pq -3rp, 4qr +9rp -4Q] +  [-3pr +5p -2PQ] = 10PQ + 3pr + -4q(1 - r)



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