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L0ET1689SHRDThis option needs to be tested. For option a, b, c, the values should be substituted into the equation to calculate the answer in the calculator, then the two values should be added and subtracted to see if they are equal. Similarly, the minimum value refers to the value that comes after solving the equation when substituted into that quantity. For example, here substituting the value of x into that equation yields 0, and that will be the answer.