# Quadratics | Maths with Lemon

Source: https://mathswithlemon.io/ai-functions-quadratic-models.html


#### Quadratic Formula


##### What you have to know:

- You must be able to manipulate algebraic expressions. (If not, check this lesson)
- You must be able to expand and factorise the square difference and perfect square expressions. (If not, check this lesson)

##### Key Points

- 1. Watch the video:
- 2. Another factorisation video .
- 3. Check out this presentation .

#### Special Cases of the Quadratic Formula


##### What you have to know:

- How to factorise a quadratic expression. (If not, check this lesson)

##### Key Points

- 1. Watch the video:

#### Quadratic Graph


##### What you have to know:

- How to plot linear graphs.

##### Key Points

- 1. Watch the video:

#### Vertex Form


##### What you have to know:

- How to expand and factorise perfect squares.

##### Key Points

- 1. Watch the video:

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