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Question
Factorise the following by splitting the middle term:
12 + x - 6x2
Sum
Solution
12 + x - 6x2
= 12 + 9x -8x - 6x2
= 3(4 + 3x) - 2x(4 + 3x)
= (4 + 3x)(3 - 2x).
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