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7^3+6^2-2=
 Sep 4, 2013
 #1
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7^3 = 7 x 7 x 7 = 343
6^2 = 6 x 6 = 36

So if I read your question correctly

343 - 36 - 2 = 305
 Sep 4, 2013
 #2
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Sorry - I should have added the 36 and not subtracted it!
 Sep 4, 2013

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