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countonme123

  • 4 years ago

Please help: Dividing Polynomials Stay tuned will draw it.

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  1. countonme123
    • 4 years ago
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    |dw:1336152715827:dw|

  2. eSpeX
    • 4 years ago
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    Like normal division, what would you need to multiply (r+2) by to get close to (r^6+0r-64)?

  3. countonme123
    • 4 years ago
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    idk i dont know how can you explain

  4. eSpeX
    • 4 years ago
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    If I gave you this:|dw:1336153681989:dw| How would you go about solving it?

  5. eSpeX
    • 4 years ago
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    You would say, "what is the largest number I can multiply 6 by to get the first number?" Since 6 is greater than 4 you would ask the question again about 42. The same logic applies to your problem... What do I need to multiply 'r' by to get r^6?|dw:1336153892815:dw|

  6. eSpeX
    • 4 years ago
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    Make sense?

  7. eliassaab
    • 4 years ago
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    \[ r^6-64=(r-2) (r+2) \left(r^2-2 r+4\right) \left(r^2+2 r+4\right) \] You can also factor before if it is permitted. Division will be easy by r+2

  8. eSpeX
    • 4 years ago
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    Not even sure if basic division makes sense at this point. :p

  9. amistre64
    • 4 years ago
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    to be fair, 6 *n = 4 when n=4/6 :)

  10. amistre64
    • 4 years ago
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    |dw:1336178970658:dw|

  11. amistre64
    • 4 years ago
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    notice that when we want to zero out the first term; we multiply by that term divded by the one on the outside same pattern applies to polys

  12. countonme123
    • 4 years ago
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    ok but i get the positive and negatives mixed up

  13. amistre64
    • 4 years ago
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    |dw:1336179161444:dw|

  14. amistre64
    • 4 years ago
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    i get positives and negatives mixed up to, which is why i always have to dbl or trpl chk my outcomes

  15. amistre64
    • 4 years ago
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    the key being, the top is just the division of the first terms each time till you decide to stop

  16. amistre64
    • 4 years ago
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    usually you simplfy the top as you go tho and wouldnt leave it in that structure

  17. countonme123
    • 4 years ago
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    hmmm

  18. amistre64
    • 4 years ago
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    its no different form what they taught you back in the 3rd or 4th grade :) you just gotta practice it to get more confident at it, but theres nothing new to it overall

  19. countonme123
    • 4 years ago
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    i wish it was like that for me but i get the numbers right just wrong signs :(

  20. amistre64
    • 4 years ago
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    wrong signs tend to be a result of forgeting that you are subtracting everything; just like normal: 8 -------- 4 ) 34 8(4) = 32 do we add or subtract the 32 to get the next line?

  21. countonme123
    • 4 years ago
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    subtract i believe

  22. amistre64
    • 4 years ago
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    correct, and its the same basic concept when using polys to; division is division no matter what you use

  23. countonme123
    • 4 years ago
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    o k

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