Problem Solving (PS) | Re: What is the minimum value of the expression

HiTheNightKing ,

If you are aware of the concept to solve for local minima and maxima using differentiation, you can solve questions such as these like a breeze. I, too, have a hard time trying to figure out how to create an equation. Let me know if you need me to solve this question using differentation.

NOTE: I am fully aware of the fact that the GMAT doesn't
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