Homework Help: algebra

Posted by Katy on Friday, October 7, 2011 at 10:31am.

What happens when you plug 1 in for x into this rational expression
(x^2-1)(x-1)-x

algebra - Steve, Friday, October 7, 2011 at 11:00am
plug it in and see!

(1-1)(1-1)-1 = 0*0-1 = -1

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