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Rezultatul calculului     (10+11+131412)2−1     este:


Răspuns :

(10+11+13−14−12)2−1=(21+13−14−12)2−1=(34−14−12)2−1=(20−12)2−1=8·2-1=16-1=15
=(21+13-14-12)*2-1=

=(34-14-12)*2-1=

=(20-12)*2-1=

=8*2-1=

=16-1=

=15