Respuesta :

Answer:

[tex](x^{2} +1)(x-3)[/tex]

Step-by-step explanation:

x^3+x-3x^2-3 [tex](x^{3} -3x^{2})+(x-3)\\ Factor out x^{2} \\=(x-3)+x^{2}(x-3)\\ =(x^{2}+1)(x-3)[/tex]