SOLUTION: What is the simplified version of 9 over ((x+1 over x-1)-1) and the domain Thanks

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Question 509152: What is the simplified version of 9 over ((x+1 over x-1)-1)
and the domain
Thanks
Answer by swincher4391(1107) About Me  (Show Source):
You can put this solution on YOUR website!
Let's make sure I get this:
expr%28%289%2F%28%28x%2B1%29%2F%28x-1%29%29%29-1%29
Then by the definition of division we have:
expr%289%2A%28%28x-1%29%2F%28x%2B1%29%29+-1%29
And distributing we get:
expr%28%28%289x-9%29%2F%28x%2B1%29%29+-+1%29
Find a common denominator of (x+1)
expr%28%28%289x-9%29%2F%28x%2B1%29%29-%28%28x%2B1%29%2F%28x%2B1%29%29%29
Simplify the numerator
expr%28%288x-10%29%2F%28x%2B1%29%29
And factoring the numerator gives us:
expr%282%2A%284x-5%29%2F%28x%2B1%29%29 <---Answer