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Edexcel A-level Maths (9MA0)

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Algebra and functions
standard
non-calculator
4 marks

The polynomial ff is defined by f(x)=4x3−12x2−x+3f(x)=4x^3-12x^2-x+3.

By first finding the product (2x−1)(2x+1)(2x-1)(2x+1), show that f(x)=(x−3)(2x−1)(2x+1)f(x)=(x-3)(2x-1)(2x+1).

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