giup minh giai bai so sanh 4^17 va 5^15 nhe dung minh se vote cho ban 5 sao luon 28/09/2021 Bởi Savannah giup minh giai bai so sanh 4^17 va 5^15 nhe dung minh se vote cho ban 5 sao luon
$\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}$ Bình luận
$\frac{4^{17}}{5^{15}}=\frac{4^{15}.4^{2}}{5^{15}}=16.(\frac{4}{5})^{15}=16.(0,8)^{15}<1$
$→ 4^{17}<5^{15}$