this website is honestly so helpful but it took me the longest time to realise that i didn't know how to answer all the questions on the worksheet because i didn't realise 2 videos were displayed on the topic site until i scrolled down.. i think maybe changing the design of the website so the videos were side by side would benefit those who were like me lol just a suggestion tho
You can if you wanted, but you will get the full marks if you leave it. If it was a solve question & not a simplify you would have to expand the denominator.