Roots of quadratic equation $5 x^{2} - 22 x - 15 = 0$ are

- 5, \frac{- 3}{5}

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5, \frac{3}{5}

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5, \frac{- 3}{5}

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None of these

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Solution

The correct option is B $5, \frac{- 3}{5}$
Given equation is :
$5 x^{2} - 22 x - 15 = 0$
$5 x^{2} - 25 x + 3 x - 15 = 0$
$5 x (x - 5) + 3 (x - 5) = 0$
$(5 x + 3) (x - 5) = 0$
$∴ x = 5, \frac{- 3}{5}$
$∴$ roots of the given equation are $5, \frac{- 3}{5}$

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