Factorise: 2 a^2+b c-2 a b-a c - Vidyadip

Question

Factorise:
$2 a^2+b c-2 a b-a c$

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Answer

$2 a^2+b c-2 a b-a c$
$=2 a^2-2 a b-a c+b c$
$=2 a(a-b)-c(a-b)$
$=(a-b)(2 a-c)$

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