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xla a treia + x la a doua - 4x - 4

Răspuns :

x²(x+1)-4(x+1)=
(x²-4)(x+1)=
(x-2)(x+2)(x+1) Asta e raspunsul final
X^3+X^2-4x-4= x²(x+1)-4(x+1)= (x²-4)(x+1)= (x-2)(x+2)(x+1)