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b) Intervals of concavityx2 -4 3. For the function y = find the following ( don't forget to simplify first) x2+2x (6 marks)a) Intervals of

b) Intervals of concavityx2 -4 3. For the function y = find the following ( don't forget to simplify first) x2+2x (6 marks)a) Intervals of increase decrease

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