hi, i've done part of a question that i need help finishing. the question is:

use the factor theorem to show that is a factor of (which i did)

then it says:

write P(x) as a product of three linear factors.

now obviously (x - 2) is one of them so i found out what the equation was that had to be multiplied by (x - 2) to get and i came to and tried to factorise it further but couldn't. why can't i find two numbers that multiply to give -6 but add to give -1? surely this is the way to do it?

thanks, mark