Solve :
$x^{2} - 7 x - 18 = 0$

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x^{2} - 7 x - 18 = 0

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Text solutionVerified

x^{2} - 7 x - 18 = 0

x^{2} - 9 x + 2 x - 18 = 0

x (x - 9) + 2 (x - 9) = 0

(x - 9) (x + 2) = 0

x = 9, - 2

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