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Edexcel IGCSE Maths 复习笔记 2.4.1 Factorising Quadratics - Basics What is a quadratic expression? A quadratic expression looks like this:ax2 + bx + c (as long as a ≠ 0) Note: If there are any high...
Edexcel IGCSE Maths 复习笔记 2.3.3 Expanding Three Brackets Expanding three brackets We’re still following the basic principle of expanding here – get rid of the brackets by multiplying out We just...
Edexcel IGCSE Maths 复习笔记 2.3.2 Expanding Two Brackets - Harder Hidden FOIL (aka spot the hidden brackets) Always write (a + b)2 as (a + b)(a + b) Beware of minus signs Remember the basic rules:...
Edexcel IGCSE Maths 复习笔记 2.3.1 Expanding Two Brackets - Basics What is expanding two brackets? When we expand brackets in algebra we ‘get rid of’ the brackets by multiplying out When we expand ...
Edexcel IGCSE Maths 复习笔记 2.2.2 Simple Factorisation What is simple factorisation? Simple Factorisation is the opposite of Expanding One Bracket Beware of minus signs Remember the basic rules: “...
What is expanding one bracket? When we expand brackets in algebra we ‘get rid of’ the brackets by multiplying out Expanding one bracket is done by multiplying everything inside the bracket by the f...
Edexcel IGCSE Maths 复习笔记 1.17.2 Division (non-Calc) (Non-calculator) division – more methods Most students will have seen short division (bus stop method) and long division and there is often c...
Edexcel IGCSE Maths 复习笔记 1.17.1 Multiplication (non-Calc) (Non-calculator) multiplication – why so many methods? Different methods work for different people, and some are better depending on th...
Edexcel IGCSE Maths 复习笔记 1.16.1 Using a Calculator Why the fuss about using a calculator? GCSE Mathematics goes beyond using the basic features of a calculator and explores many of the special ...
