Solve fro l:
$5 l^{2} + 18 l - 23 = 0$

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Solution

Given,

$5 l^{2} + 18 l - 23 = 0$

$l^{2} + \frac{18}{5} l - \frac{23}{5} = 0$

$(l - 1) (l + \frac{23}{5}) = 0$

$l = 1, - \frac{23}{5}$

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