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Se considera expresia E(x)=(2supra x-1 - 1 supra x+2): (x+3)(x-1) supra x la patrat -2x+1=
Ajutor va roggg


Răspuns :

E(x)=[2/(x-1)-1/(x+2)]:[(x+3)(x-1)]/(x²-2x+1)=[(2x+4-x+1)/(x-1)(x+2)] ·   (x²-2x+1)/(x+3)(x-1)]=[(x+5)/(x-1)(x+2)]·[(x-1)²/(x+3)(x-1)] =    (x+5)/(x+2)(x+3)