Consider the function f(x) = 10x3 + 6x2 + 7x + 20. For what value(s) of x∶          >Find the turning points of the function >Identify the points of inflexion of the function.  >Identify the largest and smallest value of the function in the             interval -8≤ x ≤  6                                                 >Classify the turning points of this function.

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