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a) Rezolvati ecuatia BX=A unde a=3,b=2,c=1; X apartine M2(R), A,B apartine M2(R)
A = (1 a)
(b 1)

B=(1 c)
(0 1)

b) Determinati matricea C apartine M2(R) astfel incat C=B+B^2+...+B^n ; n apartine N*