A=2015.2017
=2015.(2016+1)
=2015.2016+2015
B=2016.2016
=2016.(2015+1)
=2016.2015+2016
Vì 2015.2016+2015 < 2016.2015+2016
=>A < B
A=2015.2017=2015.(2016+1)=2015.2016+2015
B=2016.2016=2016.(2015+1)=2016.2015+2016
vì 2015<2016 nên A<B
Theo m thì A=B, vì:
(2015+1).2016
=>2016.2016=2016.2016
Vậy A=B
(Mình ko bt cáh trình bày)