Question

Efectuati: a.(2²-3) la puterea 100 + 5:[3²-4·(3¹-3 la puterea 0)]·1 la puterea 2013 b.21²-2·{11²+21:(2-1)+2·[1+2³·(1+2)+2 la puterea 4-2¹]}

Answer 1

a)

(2²-3) la puterea 100 + 5:[3²-4·(3¹-3 la puterea 0)]·1 la puterea 2013=

1^100+5:[9-4(3-1)]=

1+5:(9-4×2)=

1+5:1=6

b)

21²-2·{11²+21:(2-1)+2·[1+2³·(1+2)+2 la puterea 4-2¹]}=

441-2×[121+21:1+2×(1+8×3+16-2)]=

441-2×[121+21+2×(1+24+14)]=

441-2×(142+2×39)=

441-2×(142+78)=

441-2×220=

441-440=1