so sanh 4^17 va 5^15 va giai thich cac buoc giai cho minh nhe
2 câu trả lời
$\frac{4^{17}}{5^{15}}=\frac{4^{15}.4^{2}}{5^{15}}=16.(\frac{4}{5})^{15}=16.(0,8)^{15}<1$
$→ 4^{17}<5^{15}$
$\frac{4^{17}}{5^{15}}=\frac{4^{15}.4^{2}}{5^{15}}=16.(\frac{4}{5})^{15}=16.(0,8)^{15}<1$
$→ 4^{17}<5^{15}$