Maths with Lemon

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:

IB Past Paper Problems

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