You have the equation $y = 5x^3 - 9x^2 + 28x + 6$, which is a cubic function. Would you like to solve for $x$, find its critical points, graph it, or do something else with it?

Here are some common operations you might want to explore with this function:

1. Solve for $x$ when $y = 0$ (finding the roots).
2. Find the critical points (where the derivative is zero).
3. Analyze the behavior of the function as $x \to \infty$ or $x \to -\infty$ (end behavior).
4. Graph the function to visualize its shape.
5. Find the inflection points to understand the concavity of the function.

Tip: A cubic function can have one or two turning points, depending on the nature of its critical points.