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In this video tutorial, we will focus on expanding and simplifying expressions that are a bit more complex than usual, around level four or five at GCSE in the UK. The first step is to multiply two brackets together and leave the X part for the end. For example, X+3 times X+9 can be expanded as X^2 + 9X. Then, add the +3 and carefully multiply through to get the final simplified expression. This method will be consistently used in similar videos in the playlist.
