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Descompuneti in factori a) (x+2)³- 4(x+2)​

Răspuns :

[tex]\displaystyle{ (x+2)^{3} - 4(x+2) = x^{3} + 6x^{2} + 12x + 8 - 4x - 8 }[/tex]

[tex]\displaystyle{ = x^{3} + 6x^{2} + 8x }[/tex]

[tex]\displaystyle{ = x \cdot (x+4) \cdot (x+2) }[/tex]