Question

find k such that f(x)=x^3-kx^2+kx+6 has the factor x-2

Answer 1

If x-2 is a factor of f
then
f(2)=0

Answer 2

So use this f(2)=0 to find k

Answer 3

what the question is asking is to find the value of k

Answer 4

So you got it @Sona ?

Answer 5

thanks

Answer 6

If you want to put your answer, I will check it

Answer 7

i'm stuck

Answer 8

so far i'm @ -2k^2+2k+14=0

Answer 9

\[f(2)=0=2^3-k(2)^2+k(2)+6\]

Answer 10

hmmm... I don't see any k squared in your problem
\[0=8-k(4)+2k+6\]
\[0=8-4k+2k+6\]

Answer 11

\[0=8-2k+6 \]

Answer 12

You can finish the rest I believe right?

Answer 13

so k shud equal 7?

Answer 14

ya thats correct thank you!!!

Answer 15

yes lol that is right I agree with your homework checker