GM of the roots of equation $x^{2} - 18 x + 9 = 0$ is

6

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5

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3

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None of these

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Solution

The correct option is C $3$
Product of roots of the equation $x^{2} - 18 x + 9 = 0$ is $α β = 9$

GM of roots $\sqrt{α β} = 3$

Hence, option C.

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