factorise 3x³-x²-3x+1
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Answer:
3x 3 −x 2 −3x+1
=3x 3 −3x−x 2 +1
=3x(x 2 −1)−(x 2 −1)
=(x 2 −1)(3x−1)
=(x+1)(x−1)(3x−1)
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