Nizux
Nizux
07-06-2017
Mathematics
contestada
Can someone explain how to do this?
Respuesta :
Аноним
Аноним
07-06-2017
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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