Please help!! Consider the function f(x) =x^3+2x^2-3. A. graph the function Plot at least 3 points for an accurate graph. B. What are the x- & y- intercepts of the graph?

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.