Factorise : 1 - 2a - 3a^2 - Vidyadip

Question

Factorise : $1 - 2a - 3a^2$

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Answer

$1 - 2a - 3a^2$
$= 1 - 3a + a - 3a2$
$=( 1 + a )( 1 - 3a )$

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