Factorise: p^2-4 p-11 - Vidyadip

Question

Factorise:
$p^2-4 p-11$

✓

Answer

$p^2-4 p-11$
$=p^2+11 p-7 p-77$
$\{-77=-11 \times 7,-4=-11+7\}$
$=p(p-11)+7(p-11)$
$=(p-11)(p+7)$

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