\(\frac{16}{81}=\frac{2^4}{3^4}=\left(\frac{2}{3}\right)^4\)

\(\frac{25}{9}=\left(\frac{5}{3}\right)^2\)

Trả lời :

Mình có 3 cách viết khác nhé :

\(\frac{16}{81}=\left(\frac{-4}{9}\right)^2=\left(\frac{2}{3}\right)^{\text{4}}=\left(\frac{-2}{3}\right)^{\text{4}}\)

~~Học tốt~~

\(\left(\frac{2}{3}\right)^4\)

HT// nhớ k cho mik nha

\(\frac{16}{81}=\left(\frac{2}{3}\right)^4\)

\(\frac{16}{81}=\left(-\frac{4}{9}\right)^2=\left(\frac{2}{3}\right)^4=\left(-\frac{2}{3}\right)^4\)

\(\frac{16}{81}=\left(\frac{-4}{9}\right)^2=\left(\frac{2}{3^{ }}\right)^4=\left(\frac{-2}{3^{ }}\right)^4\)

Một số cách viết khác

\(\dfrac{16}{81}=\left(\dfrac{4}{9}\right)^2=\left(-\dfrac{4}{9}\right)^2=\left(\dfrac{2^2}{3^2}\right)^2=...\)

\(\dfrac{16}{81}=\left(\dfrac{2}{3}\right)^4\)

\(\dfrac{16}{81}=\left(-\dfrac{4}{9}\right)^2\)

2 mũ 3 phần 3 mũ 4 nha tk mình nhé

Lời giải:

Ta có:

Lời giải :

      Ta có :

 \(\frac{16}{81}\)\(=\)\(\left(\frac{4}{9}\right)^2\)\(=\)\(\left(\frac{-4}{9}\right)^2\)\(=\)\(\left(\frac{2}{3}\right)^4\)\(=\)\(\left(\frac{-2}{3}\right)^4\)

\(\frac{16}{81}=\frac{4^2}{9^2}=\left(\frac{4}{9}\right)^2\)