1. 1/2-1/2:2 = 1/2-1/2×1/2 = 1/2-1/4 = 2/4-1/4 = 1/4
2. a/3=9/b => a=(9×3)/b
=> a×b-27 = (9×3)/b×b-27 = 27-27 = 0
3. 2,(3) = 7/3
4. A=aria
A= l×L = 8×6 = 48m²
48m² = 0.48dm²
5. ip² = c1² + c2² => ip² = 3²+4² = 9+16 = 15
c1 - cateta 1 | => ip = radical din 15 =
c2 - cateta 2 |
ip - ipotenuza |
Sper ca te-am ajutat !
