Question

3 mũ 2 x 1/243 x 81 mũ 2 x 1/9

tính nhanh

 

Answer 1

\(3^2\cdot\dfrac{1}{243}\cdot81^2\cdot\dfrac{1}{9}\)

\(=\dfrac{3^2}{3^5}\cdot\dfrac{\left(3^4\right)^2}{3^2}=\dfrac{3^8}{3^5}\cdot\dfrac{3^2}{3^2}=3^3\)

=27