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Mistake in book?

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avarela218
 Post subject: Mistake in book?
 Post Posted: Mon Mar 23, 2009 7:46 pm 
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Posts: 4
Is there a mistake on page 102 in the Number properties book?

In the first paragraph, it says 3^4 + 12^4 = 3^4(1+4^4)

but I think it should be 3^4+12^4 = 3^4(1+2^8).

Am i right?
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esledge
 Post subject: Re: Mistake in book?
 Post Posted: Tue Mar 31, 2009 1:17 pm 
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ManhattanGMAT Staff


Posts: 901
Location: St. Louis, MO
They are equivalent and both correct: 4^4 = (2*2)^4 = (2^2)^4 = 2^(2*4) = 2^8.

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Emily Sledge
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ManhattanGMAT
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