Question

(7 la puterea 6:la 7 la puterea 4) totul la puterea9 :(7 la puterea 3) totul la puterea 6

Answer 1

$(7^6:7^4)^9:(7^3)^6=(7^{6-4})^9:7^{3*6}=(7^2)^9:7^{18}=7^{9*2}:7^{18}=7^{18}:7^{18}=1$

Answer 2

(7⁶ : 7⁴)⁹ : (7³)⁶ =
(7²)⁹ : 7 ¹⁸ =
7¹⁸ : 7¹⁸ = 
1