Question

rút gọn

\(\frac{3^4.5-3^6}{3^4.13+3^4}\)

Answer 1

\(\frac{3^4\cdot5-3^6}{3^4\cdot13+3^4}=\frac{3^4\cdot5-3^2\cdot3^4}{3^4\cdot13+3^4}=\frac{5-3^2}{13}=\frac{5-9}{13}=\frac{-4}{13}\)

Chắc là vậy đó

Answer 2

\(\frac{3^4.5-3^6}{3^4.13+3^4}=\frac{3^4.5-3^4.3^2}{3^4.\left(13+1\right)}=\frac{3^4.\left(5-9\right)}{3^4.14}=-\frac{4}{14}=-\frac{2}{7}\)