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anonymous

  • 5 years ago

Find the value of k so that the remainder of (-kx^4-146x^2+32)/(x-4) is 0

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  1. anonymous
    • 5 years ago
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    Are you doing long division right now? Or are you factoring?

  2. anonymous
    • 5 years ago
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    I was tryin to do synthetic division...failed epically. I did this on a quiz before, but it wasn't at all how we supposed to do it, I just rationalized it out...but now I don't remember how I did it. And I don't have my book with me, test tomo...ya not a good deal

  3. anonymous
    • 5 years ago
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    wht class r u in?

  4. anonymous
    • 5 years ago
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    pre-calc...the highest that math goes at my school. fml in college!

  5. anonymous
    • 5 years ago
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    Just a minute.. I will get this

  6. anonymous
    • 5 years ago
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    lol no worries i worked on it for about 45 minutes. i'm working on other problems, so take ur time

  7. anonymous
    • 5 years ago
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    OK.. I think I have it... it is a weird answer. Synthetic division... You would use 4 4 X 0 -146 0 32 -36 144 -8 -32 -9 36 -2 -8 0 so the x = 9 because there is already a - sign in the problem. Do you want to know how I did it?

  8. anonymous
    • 5 years ago
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    Thank you sooo much but...I could have definitely done this by myself. i forgot the ZEROS!!! ok lol well thanks, i think I got it from here. actually, just to make sure, ya run me through it please

  9. anonymous
    • 5 years ago
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    4 x 0 -146 0 32 because you want the answer 0 there needs to be a 0 0 right there so what do you need to put between the two so it adds to 0 4 x 0 -146 0 32 -32 0

  10. anonymous
    • 5 years ago
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    ok. and then just work backwards from there?

  11. anonymous
    • 5 years ago
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    Now how does a -32 get in that spot.. it comes from 4 * ( ) that is in the bottom of the next to last column 4 x 0 -146 0 32 -32 -8 0

  12. anonymous
    • 5 years ago
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    Then what do you have to put in to make it add to (-8) 4 x 0 -146 0 32 8 -32 2 -8 0 Etc. make sure you know you just bring down the x for the first step.

  13. anonymous
    • 5 years ago
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    ah...and it didn't help my case any that I wrote 36 on my paper instead of 32. I see now, it was just a problem of overcomplicating things, and small mistakes that messed me up. Thanks!

  14. anonymous
    • 5 years ago
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    You are welcome

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