# algebra

in equation x - 1/x
________
x + 1/x My answer key said the answer was x squared -1
_____________
squared + 1
I'm wandering why it wouldn't simply be
x-1
______
x+1

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3. 👁 89
1. i meant my answer was x squared - 1
______________
x squared +1

original equation x-1/x
________
x+1/x

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2. equation? Where is the equal sign? I have no idea what you need to do.

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3. As Bob noted you don't have an equation.

you probably have the expression

(x - 1/x)/(1 + 1/x)
and are asked to simplify it.

Hint: how about multiplying the fraction by x/x

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posted by Reiny
4. yes the directions are to simplify

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5. (x^2-1)
-------
(x+1)

(x+1)(x-1)
-----------
(x+1)

= x-1

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posted by Damon

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