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The key is to avoid being overwhelmed. To achieve this, you need to systematically reduce your options from "so many" , to one possible direction. You need to ask yourself what it is you like lo...

First, factorise both the top and the bottom expressions. What is the common factor for the top expression? (expect an answer of x). If you factorise out the x, what are you left with? (expect x(x+3))What...