waecmaths question:
One factor of $7{{x}^{2}}+33x-10$ is
Option A:
$7x+5$
Option B:
$x-2$
Option C:
$7x-2$
Option D:
$x-5$
waecmaths solution:
$\begin{align} & 7{{x}^{2}}+33x-10 \\ & 7{{x}^{2}}+35x-2x-10=0 \\ & 7x(x+5)-2(x+5)=0 \\ & (7x-2)(x+5)=0 \\ & Option\text{ }C \\\end{align}$
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