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Cel mai inteligent răspuns!
2014-10-01T23:04:22+03:00
(=(10/5)²-49/25-9/25=100/25-49/25-/9/25=42/25
 
1-5,-4,3

=7^6:7^6=7^6-6=7^0=1

=2/13(1-13)=-2·12/13=-24/13
Nu inteleg " 1-5,-4,3 " la care e ?
la al doilea ex =1-5,3=-4,3