Factorise: x^2+9 x+18 - Vidyadip

Question

Factorise:
$x^2+9 x+18$

✓

Answer

$x^2+9 x+18=x^2+6 x+3 x+18$
$=x(x+6)+3(x+6)=(x+3)(x+6)[\text { by splitting middle term }]$

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