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How do you solve #4^x-3=5#?

1 Answer

Jul 20, 2016

#x=3/2#

Explanation:

First let's have the equivalent equation

#4^x=8#

Then, since #4=2^2 and 8=2^3#, let's substitute:

#2^(2x)=2^3#

so

#2x=3#

#x=3/2#

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