Réponse :
Explications étape par étape :
Bonsoir
Exercice 29
En vecteurs
1) AE +EO = AO
2) AD + AB = AD + DC = AC
3) AO + FC = AO + OB = AB
4) BD - BC = BD + CB = CB + BD = CD
5) AE + OF +DO = DO + OF + AE = DF + AE =DF + FC = DC
6) OC +BA - OF = FO + oC +BA = FC +BA = FC +CD = FD
7) AB + CD = AB + BA = 08)
AC OA +FA= FA +AC +OA = FC + OA = FC + CO = FO
Exercice 30
En vecteurs
AB + BM = AM
DC +CD = DD = 0
MP +AM =AM +MP = AP
AB -PB = AB + BP = AP
DC -DC = 0
-SK + MK = MK + KS = MS
