Edexcel IGCSE Math a Higher 2.3 A Unknowns and Variables Topic Practice

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Pearson Edexcel International GCSE Mathematics (Specification A) (4MA1)

1 Numbers and the number system

2 Equations, formulae and identities

2.1 Use of symbols

2.2 Algebraic manipulation

2.3 Expressions and formulae

2.3.A Unknowns and variables

2.3.B Correct notational conventions for algebraic

2.3.C Substitution in expressions and formulae

2.3.D Formulae from mathematics and other real-life contexts

2.3.E Derive a formula or expression

2.3.F Changing the subject of a formula

2.3.HA Advanced changes of subject

2.4 Linear equations

2.6 Simultaneous linear equations

2.7 Quadratic equations

2.8 Inequalities

3 Sequences, functions and graphs

4 Geometry and trigonometry

5 Vectors and transformation geometry

6 Statistics and probability

7 Mathematical problem-solving and reasoning

IGCSE/Edexcel/Math a//Higher/Question Bank/2 Equations, formulae and identities/2.3 Expressions and formulae/2.3.A Unknowns and variables

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