4.05: Cubic graph and inequality

0606/21/M/J/26 — Question 1 · 5 marks

(a)
On the axes, sketch \(y=\dfrac13(2x-1)(x+3)(2x+5)\) and state the intercepts with the coordinate axes.
[3]
(b)
Solve \(\dfrac13(2x-1)(x+3)(2x+5)>0\).
[2]
Official diagram for Question 1