Răspuns :
(1/2)^4 *(1/2) ³ * (1/2)^(-6)=(1/2)^(4+3-6)=(1/2)^1=1/2
! am folosit (-a)^ (2k)= [(-1) * (a)]^2k= (-1)^2k * a^2k= 1* a^2k=a^2k, unde k∈Z
! am folosit (-a)^ (2k)= [(-1) * (a)]^2k= (-1)^2k * a^2k= 1* a^2k=a^2k, unde k∈Z