Question

Cat face i la puetrea6+ i la puterea 16-i la puterea 26+i la puterea36+i la puterea 46

Answer 1

i^6 + i^16 + i^26 + i^ 36 + i^26 +i<^46= i^2 + i + i^2 + i + i^2 + i^2= 2i -1-1-1-1 = 2i - 4

Answer 2

i⁴ = 1 
scriem  in functie  de  i⁴ =1 
i⁶ + i¹⁶ - i²⁶ + i³⁶ + i⁴⁶ = 
= i⁴ i²  + ( i⁴ )⁴  - (i⁴ )⁶ i²  + (i⁴ )⁹ +( i⁴ )¹¹ i² =
 = i²   +  1  - i²  + 1  + i² 
 =  2 -1 =1