Question

Tính nhanh:

\(\dfrac{2^3.49^3}{14^2.7^5}\)

Answer 1

\(\dfrac{2^3.49^3}{14^2.7^5}=\dfrac{2^3.7^6}{7^2.2^2.7^5}=\dfrac{2^3.7^6}{7^7.2^2}=\dfrac{2}{7}\)