Factor Patterns

For 2 weeks we were working on a maths sheet. It was called Factor Patterns. I found it hard to work out most of the questions. I found it easy to get the factors down on the paper but it was also hard. Here is my work I hope you like it. If you have done factor pattens can you tell me what you found easy and hard? Also the X on my work means I cant find a answer. Sorry if you dont know what a factor is I would explain it but its to hard explain