find the smallest and largest values ​​of the function f(x)=(x+1)∛x² on the interval [-4/5;3]

Answer 1

http://tutorial.math.lamar.edu/Classes/CalcI/AbsExtrema.aspx

Find the critical points by f'(x)=0

Evaluate the function at the critical points and end points of the interval (i.e. -4/5 and 3).