If the sum of the coefficients of the polynomial $a x^{2} + 3 x + 5$ is zero, what is the value of a ?

-3

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-8

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Solution

The correct option is B -8
The coefficients of the polynomial are a, 3 and 5.
Given,
Their sum is 0
$\Rightarrow$ a + 3 + 5 = 0
$\Rightarrow$ a + 8 = 0
$\Rightarrow$ a = -8

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