# Numbers | Maths with Lemon

Source: https://mathswithlemon.io/igcse-expanding%20advanced%20equations.html


#### Expanding and collecting like terms


##### What you have to know:

- Addition - Subtraction - Multiplication- Division of Numbers (Positive and negatives) (If not, check this video)

##### Key Points

- 1. Watch the video:
- 2. Read this presentation
- 3. Watch this video
- 4. Expanding Double brackets. Watch this video

#### Factorising


##### What you have to know:

- Expand the brackets
- Understand that factorising is the opposite procedure of expanding bracket.

##### Key Points

- 1. Watch the video:
- 2. Read this presentation
- 3. Fuctorising by grouping. Watch this video

#### Perfect square and square difference rules


##### What you have to know:

- Expand the brackets
- Factorise and expand brackets

##### Key Points

- 1. Watch the video:
- 2. Read this presentation
- 3.Factoring Perfect Square Trinomials. Watch this video

#### Algebraic Fractions


##### What you have to know:

- Expand the brackets
- Factorise and expand brackets

##### Key Points

- 1. Watch the video:
- 2. Read this presentation
- 4. Expanding Double brackets. Watch this video

#### Equations with algebraic fractions


##### What you have to know:

- To factorise
- To find the lowest common multiply of a denominator

##### Key Points

- 1. Watch the video:

#### Problems to Solve


##### Now Lets Practice!

- Solve all the problems

##### Problems on all topics