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Exponents

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Re: Exponents

by x2suresh » Mon Feb 23, 2009 2:27 pm
relaxin99 wrote:2^x - 2^ (x-2) = 3(2^13), what is the value of x?

9
11
13
15
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2^x - 2^ (x-2) = 3(2^13)

2^(x-2) (2^2-1) =3* 2^13

2^(x-2) *3 = 3* 2^13

x-2=13 --> x=15
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by relaxin99 » Mon Feb 23, 2009 2:57 pm
Great explanation, exponents are my weakness for sure
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