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Question
Factorise the following expression.
p2 + 6p + 8
Sum
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Solution
p2 + 6p + 8
It can be observed that 8 = 4 × 2 and 4 + 2 = 6
= p2 + (4 + 2) p + 4 × 2
= p2 + 4p + 2p + 4 × 2
= p (p + 4) + 2 (p + 4)
= (p + 4) (p + 2)
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