Find the roots of equation by completing the square method:
$3 x^{2} - 12 q x + 12 q^{2} = 0$

2 q, 2 q

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- 2 q, - 2 q

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- 2 q, 2 q

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None

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Solution

The correct option is B $2 q, 2 q$
$3 x^{2} - 12 q x + 12 q^{2} = 0$
$x^{2} - 4 q x + 4 q^{2} = 0$
$x^{2} - 2 * 2 q x + 4 q^{2} = 0$
${(x - 2 q)}^{2} = 0$
$(x - 2 q) (x - 2 q) = 0$
$x = 2 q o r x = 2 q$

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