waecmaths question:
Ada draws a graph of $y={{x}^{2}}-x-2$and $y=2x-1$on the same axes. Which of the these equations is she solving
Option A:
${{x}^{2}}-x-3=0$
Option B:
${{x}^{2}}-3x-1=0$
Option C:
${{x}^{2}}-3x-3=0$
Option D:
${{x}^{2}}+3x-1=0$
waecmaths solution:
$\begin{align} & \text{Equate the equations} \\ & {{x}^{2}}-x-2=2x-1 \\ & {{x}^{2}}-3x-1=0 \\\end{align}$
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