Describe the graph of the function f(x) = x3 − 11x2 + 36x − 36. include the y-intercept, x-intercepts, and the shape of the graph.

The perimeter of ? cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.