I don't understand my Alg 2 problem

[From: ] [author: ] [Date: 13-01-23] [Hit: ]

......

g(f(x))
3/x+1 ( 2x+3 )
three over x+1 times 2x+3

-

3/(x + 1) * (2x + 3) =
(6x + 9)/(x + 1)

1

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