In which interval will the graph of f(x) = x3 + 4x2 – 4x – 16 be above the x-axis?

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

id

step-by-step explanation:

idk

idk

i know the way

and

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