Use the rules of logarithms to expand [(x+3)^4(x-5)^7]

Answer 1

A poorly worded question,
we would not use logs to expand this

perhaps you meant:
if y = [(x+3)^4(x-5)^7]
then log y = log (x+3)^4 + log (x-5)^7
= 4log(x+3) + 7log(x-5)

btw, here are the 12 simplified terms of the expansion.
http://www.wolframalpha.com/input/?i=expand+%28x%2B3%29%5E4%28x-5%29%5E7

Answer 2

okay thank you :)