maths y8 algebra expand

What you'll learn

1. 1

   Imagine a rectangle that is 3 cm wide and (x + 2) cm tall. The area is 3 × (x + 2).

2. 2

   If you split 3 × (x + 2) into two parts, what do you get?

3. 3

   Use the rectangle model to expand 4 × (x + 3). Drag the slider to see the two parts.

4. 4

   Let's expand 5 × (y + 4) together.

5. 5

   Expand 2 × (a + 7). What do you get?

6. 6

   Now try expanding 3 × (2b + 1). Use the rectangle model to help.

7. 7

   Expand 4 × (3c + 5).