Factorise: 2 x^2+11 x-21 - Vidyadip

Question

Factorise:
$2 x^2+11 x-21$

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Answer

$2 x^2+11 x-21$
$=2 x^2+14 x-3 x-21$
$=2 x(x+7)-3(x+7)$
$=(x+7)(2 x-3)$

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