PEARSON (PEARSON) • Pearson Edexcel International GCSE
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Pearson Edexcel International GCSE |Mathematics A PAPER 1H Higher Tier Pearson Edexcel International GCSE P69196A ©2022 Pearson Education Ltd. L:1/1/1/1/ *P69196A0228* 2 International GCSE Mathematics Formulae sheet – Higher Tier Arithmetic series Sum to n terms, Sn = n 2 [2a + (n – 1)d] Area of trapezium = 1 2 (a + b)h b a h The quadratic equation The solutions of ax2 + bx + c = 0 where a ¹ 0 are given by: x b b ac a = − ± − 2 4 2 ...