SOLUTION: Add the rational expression. {{{(Z-1)/(z^2-1)}}}+{{{(2)/(5z+5)}}}

Algebra ->  Rational-functions -> SOLUTION: Add the rational expression. {{{(Z-1)/(z^2-1)}}}+{{{(2)/(5z+5)}}}      Log On


   

Question 309528: Add the rational expression.
%28Z-1%29%2F%28z%5E2-1%29+%282%29%2F%285z%2B5%29
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
%28Z-1%29%2F%28z%5E2-1%29+%282%29%2F%285z%2B5%29
Let's do some simplification first.
%28z-1%29%2F%28%28z-1%29%28z%2B1%29%29=%282%2F5%29%2F%28z%2B1%29
cross%28z-1%29%2F%28cross%28z-1%29%28z%2B1%29%29%2B%282%2F5%29%2F%28z%2B1%29
1%2F%28z%2B1%29%2B%282%2F5%29%2F%28z%2B1%29=%287%2F5%29%2A%281%2F%28z%2B1%29%29