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oee [108]
3 years ago
5

Can someone explain how to do this?

Mathematics
1 answer:
Tems11 [23]3 years ago
4 0
         x+7
------------------- =       
  x^2+4x -21

         x+7
= -------------------
    (x+7)(x-3)

       1
= ----------  where x is not equal -7 and 3
    x - 3

answer is A. first choice
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