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March 27, 2017

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Let f(x)=-16x^2-x^3 and g(x)=-2-4x^2. Then f(x)-g(x) equals____?

A. 1-2x^2-x^3

B. -1-2x^2+x^3

C. 1+2x^2-x^3

D. -1+2x^2+x^3

  • Integrated Math 1 - ,

    - 16 x ^ 2 - x ^ 3 - ( - 2 - 4 x ^ 2 ) =

    - 16 x ^ 2 - x ^ 3 + 2 + 4 x ^ 2 =

    - x ^ 3 - 12 x ^ 2 + 2

  • Integrated Math 1 - ,

    None of the above.

    -12x^2 -x^3 +2

    Did you copy the choices correctly?

  • Integrated Math 1 - ,

    shoot! the problems f(x)=-1-6x^2-x^3 and g(x)=-2-4x^2, then f(x)-g(x) equals___? then same choices i have above.. im sorry! thank you for doing this though! i didn't realize i copied it wrong.. :(

  • Integrated Math 1 - ,

    - 1 - 6 x ^ 2 - x ^ 3 - ( - 2 - 4 x ^ 2 ) =

    - 1 - 6 x ^ 2 - x ^ 3 + 2 + 4 x ^ 2 =

    - x ^ 3 - 2 x ^ 2 + 1

    OR

    1 - 2 x ^ 2 - x ^ 3

    Answer A.

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