Jambmaths question:
The graph above is represented by
Option A:
$y={{x}^{3}}-4x+2$
Option B:
$y={{x}^{3}}-3x+2$
Option C:
$y={{x}^{3}}+2{{x}^{2}}-x-2$
Option D:
$y={{x}^{3}}-4{{x}^{2}}+5x-2$
Jamb Maths Solution:
$\begin{align} & \text{The roots of equation are }(x+2),(x+1)\text{ and }(x-1) \\ & \therefore y=(x+2)(x+1)(x-1) \\ & y={{x}^{3}}+2{{x}^{2}}-x-2 \\\end{align}$
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