waecmaths question:
A curve is such that when y = 0, x = – 2 or x = 3. Find the equation of the curve.
Option A:
$y={{x}^{2}}-5x-6$
Option B:
$y={{x}^{2}}+5x-6$
Option C:
$y={{x}^{2}}+x-6$
Option D:
$y={{x}^{2}}-x-6$
waecmaths solution:
$\begin{align} & y=(x+2)(x-3) \\ & y={{x}^{2}}-3x+2x-6 \\ & y={{x}^{2}}-x-6 \\\end{align}$
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