## hba 2 years ago If x-1,x+2 and x+1 are all factors of a polynomial P(x) of degree 3,which of the following must also ve a factor of P(x) ? 1)x^2+3x+2 2)x^2-1 3)x^2+x-2 A)3 only B)2 only C)1 only D) all three are factors.

1. tcarroll010

factor each of a, b, and c to see what factor them. That will give you your answer, because if the factors of any or all of a, b, and/or c are the ones in the problem, then that selection is also a factor of P.

2. hba

I only get 30 seconds per question,I dont think i will be able to do it in such a short time.

3. tcarroll010

4. hba

For the first one, (x+1) (x+2)

5. tcarroll010

Good!, so 1) is a factor of P. And just check 2) and 3).

6. hba

For the second one , (x+1) (x-1)

7. tcarroll010

Good! So, 2) is a factor. Hint: if 2) works, then 3) automatically works because there is no selection for only 1) and 2).

8. hba

For the third one, (x+2) (x-1)

9. hba

So you can clearly see that All three are factors @tcarroll010 Understood!

10. tcarroll010

Excellent!

11. hba

Thanksssss Yuuuu ZZ :D

12. tcarroll010

Great job!

13. hba

Yuu Great Techesss the Mathsss.

14. hba

You are Englished :D

15. tcarroll010

thxxxxxxx muccccchhhhhh

16. hba

English like an elephant egg.

17. hba

Difficult the sunn of the bacha.

18. hba

@Zarkon I hope i am not in trouble :D

19. Zarkon

only a little ;)

20. hba

Sorry.

21. hba

Just give me One last chance.

22. Zarkon

23. hba

24. Zarkon

lol

25. hba

Haha :D