determine if x+3 is a factor of -3x^3+6x^2+6x+9. how do you know?
i keep getting yes because the remainder is 0, but that is not one of the answer choices. can someone help?

Question

determine if x+3 is a factor of -3x^3+6x^2+6x+9. how do you know?
i keep getting yes because the remainder is 0, but that is not one of the answer choices. can someone help?

anonymous · Answer

yes, because the remainder is 126
	no, because the remainder is –108
	no, because the remainder is 126
	yes, because the remainder is –108

these are the answer choices

lyrae · Answer

If you do a quick factorization of $$ -3x^3+6x^2+6x+9$$ you'll qet $$3 (x - 3) (x^2 + x + 1)$$which has no common factor with x + 3, so you probably made some small error when you did your calcualtions.

When I tried I got the reminder 126.