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forty-two Group Title

Use synthetic division to find P(–3) for P(x) = x4 – 2x3 – 4x + 4.

  • one year ago
  • one year ago

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  1. Geometry_Hater Group Title
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    |dw:1357256091951:dw| I usually use that to help out with synthethic division you just need to plug in the numbers.

    • one year ago
  2. Geometry_Hater Group Title
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    the -3 goes into the lower left corner but it turns into a positive 3

    • one year ago
  3. precal Group Title
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    |dw:1357256129903:dw|

    • one year ago
  4. forty-two Group Title
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    okay thank you guys, Precal, are you doing it with a negative three or a positive three? it looks like you did it with a positive and just wrote a negative but I cant tell, just asking

    • one year ago
  5. precal Group Title
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    you have to use -3

    • one year ago
  6. precal Group Title
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    p(-3)=151 that is one way to double check yourself

    • one year ago
  7. forty-two Group Title
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    oh okay, thank you

    • one year ago
  8. precal Group Title
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    |dw:1357256461396:dw|

    • one year ago
  9. forty-two Group Title
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    oh got it the remainder theorem, thanks precal

    • one year ago
  10. precal Group Title
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    anytime yw

    • one year ago
  11. Geometry_Hater Group Title
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    precal i thought your suppose to us turn the -3 into a 3 when you sythethic divide.

    • one year ago
  12. precal Group Title
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    if you are told (x+3) then yes x=-3 but we were given p(-3) that means x=-3 the question here is, is -3 a zero? since my remainder is 151, -3 is not a zero

    • one year ago
  13. Geometry_Hater Group Title
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    Oh ok i just saw the -3 and thought i should be positive.. ..... If you have a remainder its not a zero.

    • one year ago
  14. precal Group Title
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    correct and if it is a zero then the remainder will be zero

    • one year ago
  15. precal Group Title
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    we use synthetic division to help us factor 3 powers and above

    • one year ago
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