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by nisha.menon294 » Tue Apr 20, 2010 7:11 pm
2^x-2(2^2-1)-> 2^x-2(3)
therefore equating RHS and LHS -> x-2 =13 so x=15.
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by gmatmachoman » Wed Apr 21, 2010 12:53 am
nisha.menon294 wrote:2^x-2(2^2-1)-> 2^x-2(3)
therefore equating RHS and LHS -> x-2 =13 so x=15.
Hope this would be simpler than urs!!

2^x (1- 1/4) = 3 *( 2^13)

--> 2^x (3/4) =3 *( 2^13)

equating for x, we have;

2^x (1/4) =( 2^13)

x=15
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