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Esmy Group Title

Evaluate the function for the given value of x. If you can explain how you got the answer that would be great! :D f(x) = -6x2 - 4x - 4 , x = - 2

  • 2 years ago
  • 2 years ago

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  1. hartnn Group Title
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    directly put x=-2 f(-2)= -6 (-2)^2 -4(-2) -4 now (-2)^2 = (-2)(-2) =4 4(-2)=-8 so, f(-2) =-6(4)-(-8)-4 =-24+8-4 i think u can solve further

    • 2 years ago
  2. Rohangrr Group Title
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    |dw:1348382774561:dw|

    • 2 years ago
  3. Esmy Group Title
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    so f( - 2) = -20

    • 2 years ago
  4. hartnn Group Title
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    yup.

    • 2 years ago
  5. Esmy Group Title
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    the 20 has a negative sign its not positive

    • 2 years ago
  6. hartnn Group Title
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    yes, its -20 only.

    • 2 years ago
  7. Esmy Group Title
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    Okay yeah I see I was like It can't be positive 20. :D

    • 2 years ago
  8. jwheele1 Group Title
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    Do you understand?

    • 2 years ago
  9. Esmy Group Title
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    Yes I do actually thats why I was like this can't be positive 20 lol

    • 2 years ago
  10. jwheele1 Group Title
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    ok, great. Just wanted to make sure before I left this area. =)

    • 2 years ago
  11. jwheele1 Group Title
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    I'll leave you all with this: http://www.khanacademy.org/math/algebra/quadtratics

    • 2 years ago
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