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Exponents

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tm03
 
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Exponents

by tm03 Sun May 17, 2009 9:32 pm

If 2^x - 2^x-2=3(2^13) what is the value of x?

a) 9
b) 11
c) 13
d) 15
e) 17

Answer is d)15. It seems easy but I just can not figure out how to solve this one. I am missing something here. I'll appreciate any help.
kevinmarmstrong
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Re: Exponents

by kevinmarmstrong Mon May 18, 2009 2:35 pm

Try factoring the left side
RonPurewal
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Re: Exponents

by RonPurewal Wed May 20, 2009 6:05 am

post16795.html#p16795
tm03
 
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Re: Exponents

by tm03 Wed May 20, 2009 11:08 am

Thank you very much
JonathanSchneider
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Re: Exponents

by JonathanSchneider Thu May 28, 2009 10:32 pm

: )
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