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ajutor
Ex =3(x+1)^2+ 2(x+2)(x+3)-x+5)​


Răspuns :

3(x²+2x+1)+2(x²+3x+2x+6)-x-5=
3x²+6x+3+2x²+6x+4x+12-x-5=
5x²+15x+10=
5(x²+3x+2)=
5(x²+x+2x+2)=
5•x(x+1)+2(x+1)=
5(x+2)(x+1)

Sper ca te-am ajutat! BAFTA!☺︎︎