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Marrrta [24]
3 years ago
10

EXPAND it please and explain (9r-s/7)(9r+s/7)

Mathematics
1 answer:
Mars2501 [29]3 years ago
4 0

Answer:

2. 2

81r - s/49

Step-by-step explanation: I don’t know how to explain it but yeah

( I’m probably wrong so if I am I’m sorry)

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