Question 1128736
<br>
In general, we can't help you explain your mistake without seeing exactly what calculations you did.<br>
However, in this case, I can see what you did wrong.  You simply did not evaluate the given expression.<br>
The correct evaluation would be<br>
{{{(1/3)(4^((8-4))) = (1/3)(4^4) = 256/3}}}<br>
You calculated<br>
{{{(1/3)(4^8)-4 = (1/3)65536-4 = (65536-12)/3 = 65524/3}}}