Question

F(x)=x-1/x+1 then when f[f(x)] is

Answer 1

Answer: x²+1

Step-by-step explanation:

F(x) = x

x-1 / x+1 = x

LCD = x+1

I multiplied by the LCD on both sides

x-1 =x(x+1)

x-1 =x²+x

I transposed(x-1) on the other side

*=x²+1

Answer 2

Answer:

-1/x

Hello dear here is the solution.

f(x)=x-1/x+1

On substituting we get

f(f(x)=f(x)-1/f(x)+1

=x-1-1/x+1+1

=-1/x

Hope it helps u.

Thank u