Giải:
a) Ta có:
\(11^{13}=11^{12}.11\)
Vì \(11^{12}< 11^{12}.11\)
\(\Leftrightarrow11^{12}< 11^{13}\)
Vậy ...
b)Ta có:
\(\left(6-5\right)^{432}=1^{432}=1\)
\(\left(7-6\right)^{543}=1^{543}=1\)
\(\Leftrightarrow\left(6-5\right)^{432}=\left(7-6\right)^{543}\)
Vậy ...