Consider the function f(x)=x•?(2x+3)

(a)Find all critical points of f(x)

(b)Use a sign graph to find all intervals where f(x) is increasing. Show the sign graph. Give answers in interval notation

(c)Use the sign graph from (c) to find all intervals where f(x) is decreasing.Give answers in interval notation.

(d)Use the first derivative test to locate and identify all relative extrema

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