Fie expresia E(x)=x²-9 supra x²-4 ÷ x+3 supra x+2 + x-2 supra x²-4x+4 + 1 supra x , unde xeR-{-3,-2,0,2} . Aratati ca E(x)=x+1 supra x
Va roog .. ex 4 sub II
