Need Help with this one thank you.

QUESTION-10: [5 Marks]. (a) Use the derivative and find the value(s) of x at which the function, y = x 1 X 2 reaches the maximum value or minimum value. Calculate the maximum or minimum value of y (2.5 Marks). . ANSWER (WORKINGS): (b) Use the derivative and find the value(s) of x at which the function, y = (x - 3 ) (x + 1 ) , reaches the maximum value or minimum value. Calculate the maximum or minimum value ofy (2.5 Marks). . ANSWER (WORKINGS)