2. Consider a metric in a D-dimensional space. Simplify the following expressions, i.e. the result may be a function of D, a simple tensor that you should identify, or even a vanishing one. a) g gup b) g c) (VV-g V²)Vv d) g (A, B₁-B₁A₂) e) guga (AB - 9μo 9up APB)

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