Question

Which of the following are roots of the polynomial below? F(x) = 2x3 - x2 - 9x + 6

Answer 1

2 is a root

Answer 2

thanxx i found that the root is 2 but i dont know the other two roots

Answer 3

\[\frac{-3\pm\sqrt{33}}{4}\]

are the other 2

Answer 4

once you know one root, you could always use synthetic or long division to reduce the degree of the polynomial and find the other roots.

Answer 5

do you factor after that ?

Answer 6

You factor if you can. by the looks of the roots Zarkon found, im gonna say that after you reduce the degree, you get a quadratic equation that isnt easily factorable, so you should use the quadratic formula instead.

Answer 7

just for clarity.

Answer 8

Nice Joe :)

Answer 9

Thank you :) although i need to stop scanning and wasting all my printer paper <.< i bought 6x8 ft whiteboard for my room to stop wasting paper, im gonna use that and take pics lol

Answer 10

I kill more trees on math than the bad guy from Fern Gully <.<

Answer 11

thanxx joe :)

Answer 12

For those too young to get the reference:
http://www.imdb.com/title/tt0104254/

Answer 13

no problem :)