Factorise fully the following
- factorise fully the following 3x 18
- factorise fully the following 2x 2 8x
- factorise fully the following 2x 8
- factorise fully the following 18x+9
- factorise fully the following 6x+4
- factorise fully the following 5x 15
- factorise fully the following 8x 6
- factorise fully the following 12x 8
- factorise fully the following 2x 10
- factorise fully the following
