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Question

Factorise 3x2 + 10x + 3.
[2 Marks]

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Solution

3x2 + 10x + 3
= 3x2 + 9x + x + 3
[1 Mark]

= 3x (x + 3) + 1 (x + 3)

= (3x + 1) (x + 3)
[1 Mark]


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