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Efectoati Calculele x²-4supra x²+3x+2•x²+xsupra x²-4x+4

Răspuns :

[(x²-4)/(x²+3x+2)]•[(x²+x)/(x²-4x+4)]=
[(x-2)(x+2)(x+1)x]/[(x+1)(x+2)(x-2)(x+2)]=x/(x+2)