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How do you solve the exponential equation $9^x=3^(x+4)$ ?

1 Answer

Shwetank Mauria · Monzur R.

Feb 20, 2017

$x=4$

Explanation:

As $9^x=3^(x+4$

we have $(3^2)^x=3^(x+4)$

or $3^(2x)=3^(x+4)$

or $2x=x+4$

i.e. $2x-x=4$

and $x=4$

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