If $81^x=729$ , find $x$ ?

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Answer 1 · 2017-09-24T16:55:40

$x=1.5$

As $81^x=729$ , we can write it as

$(3^4)^x=3^6$

or $3^(4x)=3^6$

Hence $4x=6$

and $x=6/4=1.5$

If 81^x=72981^x=729, find xx?