Răspunsuri

2014-10-30T21:28:41+02:00
(-2/3)^5x(-2/3)^4=(-2/3)^9
[(-2/3)^9:(-2/3)^9]^4:(2/3):(3/2)=
1:(2/3)x(2/3)=
(3/2)x(2/3)=1