3. Calculați: a) 29+(-18); b) -34 - 76; c) -14.(-83)+(-4).(-4); d) - 72:18+(-4)! :(-4)!
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![3 Calculați A 2918 B 34 76 C 148344 D 72184 4 15 12va Rog Frumos class=](https://ro-static.z-dn.net/files/d4a/8ea47052d7e06ad208473acc6c55057a.jpg)
Explicație pas cu pas:
a) 29+(-18)=29-18=11
b) - 34-76= - 110
[tex]c) - 14 \times ( - 83) + {( - 4)}^{3} \times {( - 4)}^{2} = 1162 + {( - 4)}^{5} = 1162 + ( - 1024) = 1162 - 1024 = 138[/tex]
[tex]d) - 72 \div 18 + {( - 4)}^{15} \div {( - 4)}^{12} = 4 + {( - 4)}^{3} = 4 + ( - 64) = 4 - 64 = - 60[/tex]