Short answer: No common factors and no real roots.
Long answer: It can be factored, it just won't be pretty. Any time you're getting into the cube root of -1, it's dangerous territory.
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x2 + 7x + 6 = (x + 6) (x + 1)
x3 + 1 = x3 + x2 - x2 - x + x + 1 = x2(x + 1) - x(x + 1) +1(x + 1) = (x + 1)(x2 - x + 1)
Factor out the GCF and get X(X2-X+1).
(x-2) is NOT a factor APEX 2021
x2 + 13x + 36 = (x + 9)(x + 4)