Integration Year 2 - Mixed questions - Edexcel A level Maths - Q79

Mixed Edexcel Pure Year 2 - Integration questions. No difficulties labelled. The question could be easy, hard or somewhere in between. You'll have to figure out what method to use as I am putting them in a random order! Half of the difficulty with this topic is figuring out which integration process would get you the answer in an efficient way. These mixed questions should help.