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For the radical equation, equality can only be achieved when x = − 4 . For the quadratic function, it can be written as f ( x ) = 3 ( x − 1 ) 2 − 4 which has a global minimum value of − 4 . The maximum value is calculated per f ( − 4 ) = 3 ( − 5 ) 2 − 4 = 7 1 . Thus, f M A X + f M I N = 7 1 − 4 = 6 7 .