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Hello Please see the above picture for the question this is a question im stuck with any help will be highlyappreciated
Note that if x>-4 then x+4 is always positive, so
Now, what happens when x<-4?
About the other question: when is the denominator zero?
Edit.: Oops, I hadn't seen that princeps had already responded, hehe. Anyway, I think a little more help is not bad.