anonymous
  • anonymous
find k such that f(x)=x^3-kx^2+kx+6 has the factor x-2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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myininaya
  • myininaya
If x-2 is a factor of f then f(2)=0
myininaya
  • myininaya
So use this f(2)=0 to find k
anonymous
  • anonymous
what the question is asking is to find the value of k

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myininaya
  • myininaya
So you got it @Sona ?
anonymous
  • anonymous
thanks
myininaya
  • myininaya
If you want to put your answer, I will check it
anonymous
  • anonymous
i'm stuck
anonymous
  • anonymous
so far i'm @ -2k^2+2k+14=0
myininaya
  • myininaya
\[f(2)=0=2^3-k(2)^2+k(2)+6\]
myininaya
  • myininaya
hmmm... I don't see any k squared in your problem \[0=8-k(4)+2k+6\] \[0=8-4k+2k+6\]
myininaya
  • myininaya
\[0=8-2k+6 \]
myininaya
  • myininaya
You can finish the rest I believe right?
anonymous
  • anonymous
so k shud equal 7?
anonymous
  • anonymous
ya thats correct thank you!!!
myininaya
  • myininaya
yes lol that is right I agree with your homework checker

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