Question

1

Answer 1

Do you know the descartes rule of signs?

Answer 2

Can't remember it, can you tell me about it again?

Answer 3

Descartes' rule of signs helps you find the the zeros of polynomial. The signs are
−+, ++, +−

Answer 4

So, I googled it a bit and would the answer be 2 positive roots, 0 complex, and 1 negative root?

Answer 5

Yes! You are correct :)

Answer 6

Really? Thanks!

Answer 7

Wait, it wouldn't be 2 negative roots? 0:

Answer 8

Hold on let me check real quick.

Answer 9

Okay, thank you! :)

Answer 10

Positive Real Negative Complex
2 1 0
0 1 2

Also f(-x)=-2x^3-5x^2+6x+4

Does this help you?

Answer 11

Hmm, so it's 2 positive, 1 negative, and 0 complex or 0 positive, 1 negative and 2 complex? :)

Answer 12

Oh, wait I think I understand it now, thank you!!

Answer 13

Are you sure?

also before I forget,

according to the fundamental theorem of algebra, you must have 3 roots and each row shows the 3 arranged by type.

and you are welcome, glad to help out! Let me know if you have any questions about this.

Answer 14

Yep! I just remembered, it all clicked when I saw the reverse function with the negative, thank you very much. Also, off-topic, but love your icon. It's from Hannibal right? Looooooove that show.

Answer 15

Your very welcome!

Yep! My icon is from Hannibal! Love that show too, just started watching it a few days ago. Have to admit it's very addicting. Hugh Dancy plays Will very well in the show.