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# if 2^x - 2^x-2 = 3(2^13), what is thevalue of x? a. 9 b

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if 2^x - 2^x-2 = 3(2^13), what is thevalue of x? a. 9 b [#permalink]  22 Aug 2006, 11:27
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if 2^x - 2^x-2 = 3(2^13), what is thevalue of x?

a. 9
b 11
c13
d 15
e 17
Manager
Joined: 25 Jul 2006
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2^x (1-1/4) = 3* 2^13
2^x *3/4 = 3* 2^13
x= 13+2 =15
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