Thank you. Can we cancel (b+1) with (b2+2b+1) directly? Instead of (b+1) with (b+1)2?

You will need to show that it is in the same form

Understand now. Thanks.

Remember, if they ask you to simplify, find common numbers that can be factorised out or any ² that you can simplify. It will make life easier

Thanks for your advice.