Hi,
I have problem with a question in increasing and decreasing functions.
The question is:
Find the intervals of increase or decrease for the function:
g(x) = 3x^4 - 16x^3 + 6x^2 + 72x + 8
I've already done the derivative:
g(x) = 12x^3 - 48x^2 + 12X + 72
Can anyone help me with the other steps and the answer please?

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ok try this. first of all find the zeros
\[12x^3-48x^2+12x+72=0\]
\[x^3-4x^2+x-6=0\]

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