You can
put this solution on YOUR website! .
Factorize by grouping
f(x) = x^3 + 3x^2 - x - 3 = (x^3 - x) + (3x^2 - 3) = x*(x^2-1) + 3*(x^2-1) =
= (x+3)*(x^2-1) = (x+3)*(x+1)*(x-1).
Since you didn't ask question, I could not answer.
But I prepared EVERYTHING for you in order for you be able to create your own answer.
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