Verify that :
(-4)8÷(-4)5=(-4)3.
Given, (-4)8÷(-4)5=(-4)3.
Let LHS =(-4)8÷(-4)5
We know that
am÷an=am-n
Now, (-4)8÷(-4)5=(-4)8-5 by am÷an=am-n
=(-4)3
=RHS.
Hence proved.