math
posted by jane .
Consider the cubic graph y = 3x^2 − x^3.
(a) Write 3x^2 − x^3 in factored form.
(b) Use this form to explain why the graph lies below the xaxis only when x > 3, and why the origin is therefore an extreme point on the graph.
I mostly need help with what an extreme point is,
Thanks!
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