a) 2⁵, 7²
2⁵ = 2 × 2 × 2 × 2 × 2 = 4 × 2 × 2 × 2 = 8 × 2 × 2 = 16 × 2 = 32
7² = 7 × 7 = 49
Media aritmetică:
[tex] \frac{32 + 49}{2} = \frac{81}{2} = 81 \div 2 = 40.5[/tex]
b) 3⁴, 6²
3⁴ = 3 × 3 × 3 × 3 = 9 × 3 × 3 = 27 × 3 = 81
6² = 6 × 6 = 36
Media aritmetică:
[tex] \frac{81 + 36}{2} = \frac{117}{2} = 117 \div 2 = 58.5 [/tex]
c) 5³, 2⁴
5³ = 5 × 5 × 5 = 25 × 5 = 125
2⁴ = 2 × 2 × 2 × 2 = 4 × 2 × 2 = 8 × 2 = 16
Media aritmetică:
[tex] \frac{125 + 16}{2} = \frac{141}{2} = 141 \div 2 = 70.5[/tex]
d) 3³ = 2⁶
3³ = 3 × 3 × 3 = 9 × 3 = 27
2⁶ = dacă 2⁵ = 32 atunci, 32 × 2 = 64
Media aritmetică:
[tex] \frac{32 + 64}{2} = \frac{96}{2} = 96 \div 2 = 48 [/tex]
