Formulae: Unit 2 0.0 / 5 ? MathematicsAlgebraGCSEEdexcel Created by: annanolanCreated on: 03-12-16 08:38 What is x^0? 1 1 of 9 What is x^-m 1/ x^m 2 of 9 What is x^1/n? The n root of x 3 of 9 What is an expression? contains letter and/or number terms but no equal sign 4 of 9 What is an equation? has an equal sign, letter terms and numbers. You can solve it to find the value of the letter 5 of 9 What is an identity? true for all values of letters 6 of 9 What is a formula? has an equal sign and letters and numbers to represent different quantities. The letters are variables 7 of 9 What is the Fibonacci sequence? Where the next number is found by adding the two previous numbers (e.g. 1,1,2,3,5,8,13...) 8 of 9 How do you work out the nth term of a quadratic formula? The second differences of a quadratic sequence, un=an^2 +bn + c, are constant and equal to 2a, then subtract an^2 from the sequence 9 of 9
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