If sum of the roots of the equation $2 x^{9} - 11 x^{7} + 6 x^{4} + 8 = 0$ is $a^{1}$ , then $a^{1}$ is

\frac{11}{2}

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\frac{- 11}{2}

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\frac{2}{11}

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Solution

The correct option is C $0$
For $2 x^{9} - 11 x^{7} + 6 x^{4} + 8 = 0$
Sum of roots
$a^{1} = \frac{coefficient of x^{8}}{coefficient of x^{9}} = \frac{0}{2} = 0$

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