Question 5(i)
Factorise the following expressions
$p^{2} + 6 p + 8$

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Solution

$p^{2} + 6 p + 8 I t c a n b e o b s e r v e d t h a t, 8 = 4 \times 2 a n d 4 + 2 = 6 ∴ p^{2} + 6 p + 8 = p^{2} + 2 p + 4 p + 8 = p (p + 2) + 4 (p + 2) = (p + 2) (p + 4)$

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