Question 345083
Assuming your problem is:
{{{(3^4 - sqrt(64))/(10 - 12^2)}}}

First simplify all the pieces.
{{{3^4 = 3^2 * 3^2 = 9 * 9 = 81}}}
{{{sqrt(64) = 8}}}
{{{12^2 = 144}}}
.
So, we have to solve.

{{{(81 - 8)/(10 - 144)}}}

which is


{{{(73)/(-134)=-(73/134)}}}

Done.