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

Question

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

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

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

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

Answer 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

Answer 2

None of the above.

-12x^2 -x^3 +2

Did you copy the choices correctly?

Answer 3

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.. :(

Answer 4

- 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.