Question

Efectuați 3^51:3^48+23^3+1220​

Answer 1

a)

3⁵¹ : 3⁴⁸ + 23¹ · 3³  + 1220⁰ =

= 3⁵¹⁻⁴⁸ + 23 · 3³ + 1 =

= 3³ + 23 · 3³ + 1 =

= 3³ · 24 + 1 =

= 27 · 24 + 1 =

= 649

b)

3⁴ · 7² + 22¹ · 10³ - 154¹ =

= 81 · 49 + 22 · 1000 - 154 =

= 3969 + 22000 - 154 =

= 25815

c)

13 - 3 · [7 - 2 · (5 - 3)] =

= 13 - 3 · (7 - 2 · 2) =

= 13 - 3 · 3 =

= 13 - 9 =

= 4

d)

12 · {110 - 10 · [9 · 8 - 9 · (15 - 8)]} =

= 12 · [110 - 10 · (9 · 8 - 9 · 7)] =

= 12 · (110 - 10 · 9) =

= 12 · 20 =

= 240