Question

1) x4 + 4x3 + 4x2 – 9;​

Answer 1

Ответ:

х^4-х^3+5х^3-5х^2+9х^2-9=

=х^3(х-1)+5х^2(х-1)+9(х-1)(х+1)

(х-1)(х^3+5х^2+9)