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Did I factor this correctly or is there more to this problem?
Original Problem: x^3 – 3x^2 + 6x – 18
What I factored out: x^2 (x + 3) + 2(x - 9)
Then I got this: (x- 9) (x +3)
Which again I don't think I factored out all the way or maybe I did. So again any help I can get would be greatly appreciated.
Thanks to the both of you. These are very confusing for me. But I think I got it now.
2 Answers
- 1 decade agoFavorite Answer
you want to factor by grouping
(x^3-3x^2) = x^2(x-3)
(6x-18)= 6(x-3)
=(x^2+6)(x-3)
- Anonymous1 decade ago
That's not right, it should be like this
x²(x-3) + 6(x-3)
(x-3)(x²+6)
This is called factoring by grouping.
