Factorise the following by splitting the middle term:7x^2 + 40x -… - Vidyadip

Question

Factorise the following by splitting the middle term:$7x^2 + 40x - 12$

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Answer

$7x^2 + 40x - 12$
$= 7x^2 + 42x - 2x - 12$
$= 7x(x + 6) - 2(x + 6)$
$= (x + 6)(7x - 2).$

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