Try substituting for b in your last equation on the right side
- a,b and c are integers such that a|b and b|c. Prove that a^2 |(b^2 +bc).
if a|b than
for some m in the integers
for some n in the integers,
I know I need to show that if
for some k in integers.
really stuck from here, not such if my working is correct so far either,
any help appreciated.