Question

So sánh :

\(A=\frac{3^2}{3^3}\&B=\frac{3^3}{3^4}\)

Answer 1

Ta có:

\(A=\frac{3^2}{3^3}=\frac{9}{27}=\frac{1}{3}\)       \(B=\frac{3^3}{3^4}=\frac{27}{81}=\frac{1}{3}\)

Mà : \(\frac{1}{3}=\frac{1}{3}\)

\(\Rightarrow\frac{3^2}{3^3}=\frac{3^3}{3^4}\)

Vậy : A = B

Cho 1 đ-ú-n-g nha bạn