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OpenStudy (anonymous):
In which interval will the graph of f(x) = x3 + 4x2 – 4x – 16 be above the x-axis?
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OpenStudy (anonymous):
(-2, 2) È (4, ∞) (-4, -2) È (2, ∞) (-∞, -2) È (-2, 9) (-4, -2) È (2, 4)
OpenStudy (anonymous):
It looked easy didnt it
OpenStudy (anonymous):
@freckles
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