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Descompune in factori primi x la a 3-a + 2x la a 2-a - 2-x. Sper ca ati inteles vreau ajutor HELP ME PLEASE !!!!

Răspuns :

X³+2x²-2-x=x²(x+2)-(x+2)=(x+2)(x²-1)=(x+2)(x-1)(x+1)