If that's -9x^3 - 3x^2 + 3x + 1, that factors to (1 - 3x^2)(1 + 3x)
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9x2 + 6x + 1 = 9x2 + 3x + 3x + 1 = 3x(3x + 1) + 1(3x + 1) = (3x + 1)(3x + 1) or (3x +1)2
3(x2 + 3x + 1)
3x2 + 10x + 3 = (x + 3)(3x + 1).
(3x+1)(x+2)
(3x + 1)(x + 6)