Giups mik câu này ạ $\frac{6^{3}+3.6^{2}+3^{3}}{13}$

0 bình luận về “Giups mik câu này ạ $\frac{6^{3}+3.6^{2}+3^{3}}{13}$”

1. `(6^{3}+3.6^{2}+3^{3})/13`
   `=(3^3 . 2^3 + 3.2^2 . 3^2 + 3^3)/13`
   `= (3^3 . 2^3 + 2^2 + 1 )/13`

   `= [3^3 (2^3 + 2^2 + 1 )]/13`

   `= [3^3 (8 + 4 + 1 )]/13`

   `= (3^3 . 13)/13`

   `= 3^3`

   `= 27`

   Trả lời

2. `(6^3 + 3.6^2 + 3^3)/13`

   `= ((2 . 3)^3 + 3 . (3 . 2)^2 + 3^3)/13`

   `= (2^3 . 3^3 + 3 . 3^2 . 2^2 + 3^3)/13`

   `= (2^3 . 3^3 + 3^3 . 2^2 + 3^3)/13`

   `= (3^3 . (2^3 + 2^2 + 1))/13`

   `= (27 . 13)/13`

   `= 27`

   Trả lời