Factorise: $x^{2} + 6 x - 16 = 0$

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Solution

Given equation is $x^{2} + 6 x - 16 = 0$

$= x^{2} + 8 x - 2 x - 16$
$= x (x + 8) - 2 (x + 8)$
$= (x - 2) (x + 8)$

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