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Posted by on Friday, March 6, 2009 at 3:52pm.

Find x if 2^16^x = 16^2^x

Just to make this clear, if you were reading this aloud, it would sound like this:

if 2 to the power of 16 to the power of x equals 16 to the power of 2 to the power of x.

So basically, the x would not be the same size as the 2 or 16, but really tiny and above the 2 and 16.

Thank you!

  • Algebra - , Friday, March 6, 2009 at 4:42pm

    (2^16)^x = (16^2)^x
    16^2^x = [(2^4)^2]^x
    and
    a^b^c = a^(bc)
    so
    2^16 x = 2^8x
    16 x log 2 = 8 x log 2
    16 x = 8 x ?
    not unless x = 0

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