Question

Will Fan+medal. factorise x^3 -x^2 - 4x - 4

Answer 1

Anyone?

Answer 2

i doubt it factors completly

Answer 3

yep i agree with @mathmath333 me too have a doubt in this question.

Answer 4

it does factor, it has a determinant of 17 so the roots are irrational, just don't know how to get them.

Answer 5

it gives imagenary roots

Answer 6

are you sure the negative/positive signs are correctly typed?

Answer 7

http://www.wolframalpha.com/input/?i=factor+x%5E3+-x%5E2+-+4x+-+4

Answer 8

oh no, the last part is +4 not -4

Answer 9

can you solve it now?

Answer 10

yeah using the factor theorem and synthetic division

Answer 11

no just, factorise normally
take out the same terms

Answer 12

oh yeah, that works too. thanks guys