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The function `f(x)=2x^(3)-15x^(2)-144x-7` is increasing for

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The function `f(x)=2x^(3)-15x^(2)-144x-7` is increasing for
A. `x gt -3" or "x lt 8`
B. `x lt -3" or "x gt 8`
C. `x gt 3" or "x lt -8`
D. `x lt 3" or "x gt -8`
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Correct Answer - B
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