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!
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let say
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if , we have"
.......solve for
so,
check:
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