Expand and simplify (x−k)(x−9)(x - k)(x - 9)(x−k)(x−9), giving your answer in terms of kkk.
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Markscheme
Expanding and Factorising Quadratics Questions
255 exam-style questions on OCR GCSE Maths Expanding and Factorising Quadratics. Each one has a worked solution and a mark scheme showing where the marks go.