## anonymous one year ago Simplify the rational expression. State any restrictions on the variable.

1. anonymous

$\frac{ k^2-k-2 }{ k^2-4k-5}$

2. anonymous

3. anonymous

$\frac{ (k+1)(k-2) }{ (k+1)(k-5)}$

4. anonymous

$\frac{ k-2 }{ k-5 }$

5. anonymous

That's the answer but i need to find the other part of the answer

6. anonymous

$\frac{ (k-2)(k+1) }{(k-5)(k+1)}$ you can eliminate (k+1) but $k+1\neq0$ $k\neq-1$ and the same to (k+5) $k-5\neq0$ $k\neq5$

7. anonymous

because you can not divide by zero. Is an uncertainty

8. anonymous

So it's A?

9. anonymous

yes

10. anonymous

Thank you so much! :) Gave you a medal!

11. anonymous

:D

Find more explanations on OpenStudy