The problem My aproach: = = = = = But according to the book the answer should be = Mmm...-2 and -1 on the original problem should be exponents.

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Originally Posted by Alienis Back The problem My aproach: = = = = = But according to the book the answer should be = Mmm...-2 and -1 on the original problem should be exponents. You haven't gone far enough. .

What did you do here? Originally Posted by Prove It You haven't gone far enough. . I mean ...mmm...

Last edited by Alienis Back; April 22nd 2009 at 05:54 PM. Reason: can anyone tell me how to write 1-2 as exponent

Originally Posted by Alienis Back What did you do here? I mean ...mmm... [tex]Remember that So . Therefore

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