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


Fie Expresia Exx9 Supra X4 X3 Supra X2 X2 Supra X4x4 1 Supra X Unde XeR3202 Aratati Ca Exx1 Supra XVa Roog Ex 4 Sub II class=

Răspuns :

E(x)=(x-3)(x+3)/(x-2)(x+2)×(x+2)/(x+3)+(x-2)/(x-2)^2+1/x
E(x)=(x-3)/(x-2)+1/(x-2)+1/x
E(x)=(x-2)/(x-2)+1/x
E(x)=1+1/x amplificãm pe 1 cu x
E(x)=(x+1)/x