Question

2. Calculati:
dau coroana​

Answer 1

a) 31

b) 81-64 = 17

c) 125+243 = 368

d) 32-25 = 7

e) 128+49 = 177

f) 81-81 = 0

g) 8+4+2+1 = 15

h) 3^9 - (3^3)^3 = 3^9 - 3^9 = 0

Answer 2

Răspuns:

Explicație pas cu pas:.

a) 2² + 3³ = 4 + 27 = 31

2² = 2 × 2 => 2² = 4

3³ = 3 × 3 × 3 => 3³ = 27

b) 3⁴ - 4³ = 81 - 64 = 17

3⁴ = 3 × 3 × 3 × 3 => 3⁴ = 81

4³ = 4 × 4 × 4 => 4³ = 64

c) 5³ + 3⁵ = 125 + 243 = 368

5³ = 5 × 5 × 5 => 5³ = 125

3⁵ = 3 × 3 × 3 × 3 × 3 => 3⁵ = 243

d) 2⁵ - 5² = 32 - 25 = 7

2⁵ = 2 × 2 × 2 × 2 × 2 => 2⁵ = 32

5² = 5 × 5 => 5² = 25

e) 2⁷ + 7² = 128 + 49 = 177

2⁷ = 2 × 2 × 2 × 2 × 2 × 2 × 2 => 2⁷ = 128

7² = 7 × 7 => 7² = 49

f) 3⁴ - 9² = 81 - 81 = 0

3⁴ = 3 × 3 × 3 × 3 => 3⁴ = 81

9² = 9 × 9 => 9² = 81

g) 2³ + 2² + 2¹ + 2⁰ = 8 + 4 + 2 + 1 = 12 + 2 + 1 = 14 + 1 = 15

2³ = 2 × 2 × 2 => 2³ = 8

2² = 2 × 2 => 2² = 4

2¹ = 2

2⁰ = 1

h) 3⁹ - 27³ = 3⁹ - (3³)³ = 3⁹ - 3⁹ = 0

27³ = (3³)³ => 27³ = 3⁹

Succes!