Jambmaths question:
Find y, if $\sqrt{12}-\sqrt{147}+y\sqrt{3}=0$
Option A:
1
Option B:
3
Option C:
5
Option D:
7
Jamb Maths Solution:
$\begin{align} & \sqrt{12}-\sqrt{147}+y\sqrt{3}=0 \\ & \sqrt{4\times 3}-\sqrt{49\times 3}+y\sqrt{3}=0 \\ & 2\sqrt{3}-7\sqrt{3}+y\sqrt{3}=0 \\ & -5\sqrt{3}+y\sqrt{3}=0 \\ & y\sqrt{3}=5\sqrt{3} \\ & y=5 \end{align}$
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