Cách viết:

81/625 = 3.3.3.3/5.5.5.5 = 3^4/5^4 = (3/5)^4

chúc bạn vui vẻ

\(\frac{81}{625}=\frac{9^2}{25^2}=\left(\frac{9}{25}\right)^2\)

\(\frac{81}{625}=\frac{3^4}{5^4}=\left(\frac{3}{5}\right)^4\)

`81/625 = (9^2)/(25^2) = (9/25)^2`

`81/625 = (3^4)/(5^4) = (3/5)^4`

\(\dfrac{81}{625}=\left(\dfrac{9}{25}\right)^2\)

.

\(\frac{8^{14}}{4^{12}}=\frac{\left(2^3\right)^{14}}{\left(2^2\right)^{12}}=\frac{2^{42}}{2^{24}}=2^{42-24}=2^{18}\)

\(\frac{81}{625}=\frac{3.3.3.3}{5.5.5.5}=\frac{3^4}{5^4}=\left(\frac{3}{5}\right)^4\)

625^1

25^2

(-25)^2

5^4

(-5)^4

THANKS! CẢM ƠN BẠN NHÉ!

Mình không biết có đúng không đó bởi mình mới lớp 6 thôi

\(\dfrac{81}{625}=\left(\dfrac{3}{5}\right)^4=\left(-\dfrac{3}{5}\right)^4=\left(\dfrac{9}{25}\right)^2=\left(-\dfrac{9}{25}\right)^2\)

81/625 = 3.3.3.3/5.5.5.5 = 3^4/5^4 = (3/5)^4

\(\frac{81}{625}=\left(\frac{9}{25}\right)^2\)

\(\frac{81}{625}=\left(\frac{3}{5}\right)^4\)

(ko bt là đủ chưa nữa)