Level 3 Algebra 1.0 / 5 based on 1 rating ? MathematicsAlgebra and functionsASEdexcel Created by: amywilkoCreated on: 05-05-16 21:13 Sum of numbers Sn = n / 2 [ 2a + ( n - 1 ) d ] OR n / 2 ( a + l ) 1 of 8 nth term a + ( n - 1 ) d 2 of 8 Trapezium rule h / 2 [ sum of ends + ( 2 x sum of middle ) ] 3 of 8 Area of a trapezium 1 / 2 ( a + b ) h 4 of 8 Quadratic formula ( -b +- / b^2 - 4ac ) / 2a 5 of 8 Acceleration formula change in speed / time 6 of 8 sum of roots -b / a 7 of 8 Product of roots c / a 8 of 8
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