# 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 x-axis 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!