Solve :
$x^{2} + x - 30 = 0$

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Solution

Given, $x^{2} + x - 30 = 0$

$x^{2} + 6 x - 5 x - 30 = 0$

$x (x + 6) - 5 (x + 6) = 0$

$(x + 6) (x - 5) = 0$

$x = 5, - 6$

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