x^3 + 3x^2 - 4x - 12
a^3 + 9a^2 + 27a + 27
x^3 - x^2 - 4
x^2 + 6x + 8
x^3 + x^2
4 + 4b + b^2
x^4 + 10x^2 + 9
x^2 + 2x + 5x + 3x^3 + 9x^2 - 2x^3
(x - 2) * (x + 2) * (x + 3)
(x + 1) * (x - 1) * (x + 3) * (x - 3)
(x - 2) (x^2 + x + 2)
(2 + b)^2
(x + 2) * (x + 4)
x^2(x + 1)
(a + 3)^3
x(x^2 + 10x + 7)
