Which of the following is/are the roots of the equation $4 x^{2} + 7 x = 0$ ?

\frac{- 7}{4}

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0

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\frac{- 7}{4}

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\frac{- 4}{7}

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Solution

The correct option is B $0$
Given equation is $4 x^{2} + 7 x = 0$ .
If $c = 0$ in $a x^{2} + b x + c = 0$ , then the roots are $0$ and $\frac{- b}{a}$
$\Rightarrow$ the roots of this equation are $0$ and $\frac{- 7}{4}$

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