Question on: JAMB Mathematics - 2007

Find y, if (\sqrt{12}-\sqrt{147}+y\sqrt{3} = 0)

A
5
B
1
C
7
D
3
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Correct Option: A

(\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\

y\sqrt{3} = 7\sqrt{3} - 2\sqrt{3}\

y=\frac{5\sqrt{3}}{\sqrt{3}}\

y = 5)

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