2.7 Quadratic Equations

REVISION NOTES

IGCSE Edexcel Mathematics A

2.7.1 Solve quadratic equations by factorisation (limited to x² + bx + c = 0)

2.7.2 Solve quadratic equations by using the quadratic formula or completing the square (Higher Tier Only)

2.7.3 Form and solve quadratic equations from data given in a context (Higher Tier Only)

2.7.4 Solve simultaneous equations in two unknowns, one equation being linear and the other being quadratic (Higher Tier Only)

1. Numbers & the Number System

1.1 Integers

1.2 Fractions

1.3 Decimals

1.4 Powers and Roots

1.5 Set Language and Notation

1.6 Percentages

1.7 Ratio and Proportion

1.8 Degree of Accuracy

1.9 Standard Form

1.10 Applying Numbers

1.11 Electronic Calculator

2. Equations, Formulae & Identities

2.1 Use of Symbols

2.2 Algebraic Manipulation

2.3 Expressions and Formulae

2.4 Linear Equations

2.5 Proportion (Higher Tier Only)

2.6 Simultaneous Linear Equations

2.7 Quadratic Equations

2.8 Inequalities

3. Sequences, Functions & Graphs

3.1 Sequences

3.2 Function Notation (Higher Tier Only)

3.3 Graphs

3.4 Calculus (Higher Tier Only)

4. Geometry

4.1 Angles, Lines & Triangles

4.6 Circle Properties

4.7 Geometric Reasoning

4.8 Trigonometry and Pythagoras’ Theorem

4.9 Mensuration of 2D Shapes

4.10 3D Shapes and Volumes

4.11 Similarity

5. Vectors & Transformation Geometry

5.1 Vectors (Higher Tier Only)

5.2 Transformation Geometry

6. Statistics & Probability

6.1 Graphical Representation of Data

6.2 Statistical Measures

6.3 Probability

7. Appendix

7.1 Appendix 1: Foundation Tier Formula Sheet (Given)

7.2 Appendix 2: Foundation Tier Formula Sheet (To Memorise)

7.3 Appendix 3: Higher Tier Formula Sheet (Given)

7.4 Appendix 4: Higher Tier Formula Sheet (To Memorise)

7.5 Appendix 5: Notation

IGCSE Edexcel Mathematics A

2.7 Quadratic Equations

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