SOLUTION: simplify rational expressions using -1 as a factor x squared - 1 ___________ _ 1 - x

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Question 31217: simplify rational expressions using -1 as a factor
x squared - 1
_____________
1 - x
Answer by troyapplehelen(46) About Me  (Show Source):
You can put this solution on YOUR website!
(x squared -1)/(1-x) is {(x+1)(x-1)}/-1(x+1), then cancel (x+1) on both, top and bottom. then, (x-1)/-1 which is -(x-1), which is 1-x(=-x+1)