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 × 7, 15 = 8 + 7} $
$= x(x + 8) + 7(x + 8) $
$= (x + 8)(x + 7)$

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