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Descompusa in factori,expresia:
x^3-x ^2-4x+4


Răspuns :

x²(x-1)-4(x-1)=  (x-1)(x²-4)=(x-1)(x-2)(x+2)
x^3 - x² - 4x + 4 = x²(x - 1) -4(x - 1) = (x - 1)(x² - 4) = (x - 1)(x - 2)(x + 2)