Question

[26: Hoàng Phong]

7⁶-3²*49³-3³*343² phần 5*7⁶

Answer 1

[Thầy Cao Đô]

$\dfrac{7^6 - 3^2.49^3 - 3^3 . 343^2}{5.7^6} = \dfrac{7^6 - 3^2.(7^2)^3 - 3^3 . (7^3)^2}{5.7^6} = \dfrac{7^6 - 3^2.7^6 - 3^3 . 7^6}{5.7^6} = \dfrac{7^6.(1 - 3^2 - 3^3)}{5.7^6}= \dfrac{1 - 9 - 27}{5} = \dfrac{-35}5 = -7.$