👤

Folosind factorul comun calculati :A) 12*89*78*12=
B) 2956*1995-1995*2995=
C) 123*389+123*11-50*123=


Răspuns :

a)  12(89x78)= si fa inmultirea
b) 1995(2995-2956)=
c) 123(389+11-50)=...
A)  lipseste o operatie
B)=1995(2956-2995)=1995·(-39)=-77805
C)  =123(389+11-50)=123·350=43050