(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

lim |x-1|/x^3-1

x-->1+

2. Relevant equations

3. The attempt at a solution

This is from a "practise test" and the prof wrote his solution on it... I'm having a hard time figuring out why (x^3-1) = (x-1)(x^2+x+1) which is what he used to find the limit.... im fine at figureing out limits but I just have no idea how he figures those two equations are equal because when i multiply through i get (x^3-2x^2+2x-1)

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# Homework Help: Prof = Wrong?

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