Oblique asymptote: Use polynomial long division to express in the form . The oblique asymptote is .
2.) Zeroes: Solve . Hint: Factorise (there's a common factor ....)
Stationary points: Solve . Use the sign test to determine the nature of the stationary points.
Graph: The shape is a positive cubic. Add the information found above.
If you need more help, please post your working and state exactly where you're stuck.