Question

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.

Answer 1

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.

Answer 2

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

Answer 3

So, start with selection 1) . What are its factors?

Answer 4

For the first one,

(x+1) (x+2)

Answer 5

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

Answer 6

For the second one ,

(x+1) (x-1)

Answer 7

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

Answer 8

For the third one,

(x+2) (x-1)

Answer 9

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

Answer 10

Excellent!

Answer 11

Thanksssss Yuuuu ZZ :D

Answer 12

Great job!

Answer 13

Yuu Great Techesss the Mathsss.

Answer 14

You are Englished :D

Answer 15

thxxxxxxx muccccchhhhhh

Answer 16

English like an elephant egg.

Answer 17

Difficult the sunn of the bacha.

Answer 18

@Zarkon I hope i am not in trouble :D

Answer 19

only a little ;)

Answer 20

Sorry.

Answer 21

Just give me One last chance.

Answer 22

I'll think about it :)

Answer 23

Omg,I am so dead :(

Answer 24

lol

Answer 25

Haha :D