Edexcel GCSE Maths June 2018 Higher Paper 1 - Non Calculator (FULL WORKED SOLUTIONS)

[@tpiano1165]

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[@t_c7334]

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[@ratofalady8125]

for q20 it doesnt make sense that 6n is always greater than nsquared + 5 cause like the bottom could still be positive even if it was smaller right?? because idk could be 3/2?