Find y if sqrt 12 - sqrt 147 y sqrt 3 0 - JAMB Mathematics 2007 Question
Find y, if \(\sqrt{12}-\sqrt{147}+y\sqrt{3} = 0\)
A
5
B
1
C
7
D
3
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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