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Distribution

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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by carrillo1228 » Tue Mar 23, 2010 8:26 am
So..... on the Manhattan GMAT text book, I was going over advanced equation strategy and there is one example that I can't get my hands around and was wondering if anyone could help me understand.


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I understand the start to Factor part....... but I don't understand how they get to the final part...

thanks
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Source: — Quantitative Reasoning |
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by kstv » Tue Mar 23, 2010 8:49 am
m^n(1-m^-1) -------------------as m-¹=1/m

= m^n(1- 1/m)


m^n(1- 1/m)

= m^n{(m-1)/m }

= m^n^/m {m-1}

= m^n-1(m-1)
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