Question

Rút gọn giùm Luka

\(\frac{3^4\cdot5-3^6}{3^4\cdot13+3^4}\)

Answer 1

3⁴ . 5 - 3⁶ / 3⁴ . 13 + 3⁴

= 3⁴ . 5 - 3⁴ . 3 . 3 / 3⁴ . 13 + 3⁴

= 5 . 3 . 3 / 13

= 45/13

Answer 2

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