Question

descompunetii în factori x la 3 +2xla 2 -x-2

Answer 1

x^2(x+2)-(x+2)=(x+2)(x^2-1)=(x+2)(x-1)(x+1)

Answer 2

$x^3+2 x^{2} -x-2=(x^3+2 x^{2} )-(x+2)= x^{2} (x+2)-(x+2)= \\ =(x+2)( x^{2} -1)=(x+2)(x-1)(x+1)$