Edexcel IGCSE Maths 復習筆記 2.4.3 Difference of Two Squares What is the difference of two squares? A “Difference Of Two Squares” is any expression in the form p2?– q2 Why is it so important? It co...
Edexcel IGCSE Maths 復習筆記 2.4.2 Factorising Quadratics - Harder 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 復習筆記 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 復習筆記 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 復習筆記 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 復習筆記 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 復習筆記 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 復習筆記 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...
