Using the factor Theorem
posted by Rose .
use the factor theorem to determine whether x-c is a factor of f(x)
I have a doubt in my answer, i determined that x-10 is not a factor... am i right? please verify as my exam is tomorrow night at college. thank you for your time and hard work:)
It can be shown that x-10 is not a factor of x^3+8x^2-18x+20. So your are correct.
If you wish, you could try (x+10) and show that it is a factor of x^3+8x^2-18x+20.
thank you so much dear mate, yes i took your advise and indeed i got it as a factor:) thank you.