Question

simplify.
(u^4)^5
write your answer without parentheses.

Explanation:

Step1: Apply power - of - a - power rule

According to the power - of - a - power rule $(a^m)^n=a^{m\times n}$. Here $a = u$, $m = 4$ and $n = 5$.
$u^{4\times5}$

Step2: Calculate the exponent

$4\times5=20$
So we get $u^{20}$

Answer:

$u^{20}$