Question

Descompuneti in factori, grupand convenabil termenii
$x^{3} - 9x^{2} + x - 9$

Answer 1

x^3-9x^2+x-9=
=x^2(x-9)+x-9
=(x-9)(x^2+1)

Answer 2

Răspuns:

x^2 (x-9)+(x-9)=(x-9)(x^2 -1)=(x-9)(x+1)(x-1)