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How do you solve ${log}_{x} 81 = 4$ $log_x 81=4$ ?

1 Answer

Shwetank Mauria

Aug 11, 2018

$x = 3$ $x=3$

Explanation:

As ${log}_{x} 81 = 4$ $log_x81=4$ , we have $x^{4} = 81 = 3^{4}$ $x^4=81=3^4$

Hence $x = 3$ $x=3$

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