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Question

Factorise 3x2 + 22x + 35.
[2 Marks]

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Solution

3x2 + 22x + 35
= 3x2 + 15x + 7x + 35
[1 Mark]

= 3x (x + 5) + 7 (x + 5)

= (3x + 7) (x+ 5)
[1 Mark]


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