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设f(x)=2x+3,g(x+2)=f(x),则g(x)等于( )
A.2x+1 B.2x-1
C.2x-3 D.2x+7
设f(x)=2x+3,g(x+2)=f(x),则g(x)=
[ ]
设f(x)=2x+3,g(x+2)=f(x),则g(x)= ( )
A.2x+1 B.2x-1
C.2x-3 D.2x+7