Question

\(tính:\frac{0,8^5}{0,4^6}\)

Answer 1

\(\frac{\left(0,8\right)^5}{\left(0,4\right)^6}=\frac{\left(0,8\right)^5}{\left(0,4\right)^5}\times\frac{1}{0,4}=\left(\frac{0,8}{0,4}\right)^5\times\frac{5}{2}=2^5\times\frac{5}{2}=2^4\times5=16\times5=80\)

Answer 2

\(\frac{0,8^5}{0,4^6}=\frac{0,8^5}{0,4^5.\left(0,4\right)}=\left(\frac{0,8}{0,4}\right)^5.\left(0,4\right)=32.\left(0,4\right)=\frac{64}{5}\)\(\frac{0,8^5}{0,4^6}=\frac{0,8^5}{0,4^5.\left(0,4\right)}=\left(\frac{0,8}{0,4}\right)^5.\left(0,4\right)=32.\left(0,4\right)=\frac{64}{5}\)