SOLUTION: If f(x)= x-1 over x+2 and f(g(x))= 1/x, then which of the following could be g(x)? A. 2+x over x-1 B. x+2 over x-1 C. (x+1)(x+2) D. x-2 over x-1

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Question 1088764: If f(x)= x-1 over x+2 and f(g(x))= 1/x, then which of the following could be g(x)?
A. 2+x over x-1
B. x+2 over x-1
C. (x+1)(x+2)
D. x-2 over x-1

Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!

and
let say
then

if , we have"
.......solve for





so,

check:











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