(a)[1]
Finish the table for $y = \frac{x}{4}(2x^2 - x - 10)$.
(b)[3]
Plot the graph of $y = \frac{x}{4}(2x^2 - x - 10)$ for $-3 \leq x \leq 3$.
(c)[2]
The equation $\frac{x}{4}(2x^2 - x - 10) = k$ has exactly two solutions. Use your graph to identify the possible values of $k$.
(d)[4]
Using a suitable line on the grid, find the solutions of $2x^3 - x^2 - 10x = 2x - 4$.