\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Pour \(\Vect{AB}\cdot \Vect{AC}= 2\) et \(\Vect{AB}\cdot \Vect{CB}= 3\), calculer :
\(\|\Vect{AB}\|^2 =\)