pratu043
Find the value of x.



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pratu043
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dw:1342255753830:dw

ganeshie8
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hint :
128 = 2^7
8 = 2^3

georgeblue22
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(2^x)*(8^x) = 128
(2^x)*(2^3x) = 128

pratu043
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dw:1342255885720:dw

georgeblue22
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solve 4x = 7

pratu043
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dw:1342255920219:dw

pratu043
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x = 7/4.
Sorry, I actually knew this but didn't realise that 128 = 2^7.

ganeshie8
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np :)