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Cambridge Higher Maths GCSE for AQA Student Book - Algebra

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    • Thread Starter

    I'm working my way independently through this tome, particularly with reference to algebra, and I am being stumped by (in)correct answers associated with the exercises.

    Some answers are obviously wrong and in most cases I can see where they are wrong. In this particular case I am stymied as I can't see where the answers and/or my working are taking wrong turns.

    Question: Factorise 1-(2x-3)^2

    Their answer: 2(x-2)(2-x)

    I get -4(x-1)(x-2)

    I just can't get their answer; am I missing something?

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