Explanation:

First reduce the expression with b⁴
b⁴ will cancel b^5 remaining with one b
That's

Next reduce 8 and 4 with their GCF which is 4
We have

Reduce the expression with c .
c will go into c⁴ remaining with c³
That's

Simplify the expression again with c
That's

Multiply the expression
We have the final answer as

Hope this helps you