Question: How does algebraic form influence maximization routines?

Please help me check the attached worksheet. I defined the target functions by two ways: factor one parameter delta out in two terms or totally expand them (you can uncomment the definition to play by the remarks). The plots drawn or the evaluation done in the end are quite different. When Maple do maximization or evaluation, what is the difference between these two "algebraic identical" forms?

Thanks.View 8939_deltasq.mw on MapleNet or Download 8939_deltasq.mw
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