2 years ago

I need help with this question

1 answer:

4 0

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

= x^2 (x+4)-4(x+4)
=(x^2 -4) (x+4)
x=2, x=-4
so the point should be (2,0), (-4,0) and 16 to the down.
Thus, number 1 is the correct answer.

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