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Question
Factorise the following:
9x2 – 12x + 3
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Solution
9x2 – 12x + 3 = 3(3x2 – 4x + 1) ...[Taking 3 common factor]
= 3(3x2 – 3x – x + 1) ...[By splitting middle term]
= 3[3x(x – 1) – 1(x – 1)]
= 3(3x – 1)(x – 1)
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