Edexcel IGCSE Maths 复习笔记 2.5.2 Rearranging Formulae - Harder

Edexcel IGCSE Maths 复习笔记 2.5.2 Rearranging Formulae - Harder

SIR! GROF GROBLET FIND ANSWER!

• This is a mnemonic (way of remembering something) developed to deal with everything including roots and powers (for a simpler version see the previous set of notes) and can also be used for solving equations…

SIR! – Squares, Indices, Roots

1. SIR! – Squares, Indices, Roots (can be used at any point)
2. GROF?– Get Rid Of Fractions
3. GROB?– Get Rid Of Brackets
4. LET?– Lump Everything Together (or Let’s Examine Terms)
5. FIN?– Factorise if Necessary
6. D?– DivideANSWER!

Worked Example

转载自savemyexam