SOLUTION: If f(x)=x^2 -1 and g(x)=1/x, write the expression f(g(x)) in terms of x. A. (1+x)(1-x) over x^2 B. (1+x) over x^2 C. (1-x) over x^2 D. 1/x^2

SOLUTION: If f(x)=x^2 -1 and g(x)=1/x, write the expression f(g(x)) in terms of x. A. (1+x)(1-x) over x^2 B. (1+x) over x^2 C. (1-x) over x^2 D. 1/x^2

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Question 1088761: If f(x)=x^2 -1 and g(x)=1/x, write the expression f(g(x)) in terms of x.
A. (1+x)(1-x) over x^2
B. (1+x) over x^2
C. (1-x) over x^2
D. 1/x^2

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Put the g(x) in the f (x) function
(1/x)^2-1
1/x^2-1
That is (1-x^2)/x^2, which is (1+x)(1-x)/x^2.
A.
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