Factorise: x^2+15 x+56 - Vidyadip

Question

Factorise:
$x^2+15 x+56$

✓

Answer

$x^2+15 x+56$
$=x^2+8 x+7 x+56$
$\{56=8 \times 7,15=8+7\}$
$=x(x+8)+7(x+8)$
$=(x+8)(x+7)$

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