How do you solve $x=log_15 225$ ?

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Answer 1 · 2015-11-27T23:11:55

$x=2$

It is always important to remember that logarithms undo exponents and vice versa.

For example: if $log_ab=c$ , then $a^c=b$ .

Therefore, if $x=log_15 225$ , then $15^x=225$ .

We can rewrite this as $15^x=15^2$ .

Thus, $x=2$ .

How do you solve x=log_15 225x=log_15 225?