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Again.. what is x (exponents involved)?? Help

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by LalaB » Sat Dec 24, 2011 9:38 am
2^x - 2^x-2 = 3(2^13)
2^x-2*(2^2-1)=3(2^13)
3*2^x-2=3(2^13)
2^x-2=2^13

x-2=13
x=15
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by CollegeKart » Sat Dec 24, 2011 10:55 am
2^x - 2^x-2 = 3(2^13), what is x?
2^x(1-1/4)= 3(2^13)
2^x(3/4)= 3(2^13)
3(2^x-2)= 3(2^13)
x-2=13
x=15
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by GMATGuruNY » Sat Dec 24, 2011 2:31 pm
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