Factorise : $14 x^{2} + 9 x + 1$

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Solution

$14 x^{2} + 7 x + 2 x + 1$
$\Rightarrow 7 x (2 x + 1) + 1 (2 x + 1)$
$\Rightarrow (7 x + 1) (2 x + 1)$
Hence, the answer is $(7 x + 1) (2 x + 1) .$

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