Question

dau coroana!repede va rog!​

Answer 1

Răspuns:

Explicație pas cu pas:

puterile se scad; "/" - fractie

a) = 1 / 2^(21-20) = 1/2;

b) = 1/3³ = 1/27;

c) = 1/5² = 1/25;

d) = 1/6-> (48-47=1);

e) = 1/7² = 1/49 -> (80-78=2);

f) = 1/4³ = 1/64;

g) = 2^49 / 2^51 = 1/2² = 1/4; → 8^17 = (2³)^17

h) = 2^75 / 2^80 = 1/2^5 = 1/32 ; →8^25 = (2³)^25

i) = 2^52 / 2^55 = 1/2³ = 1/8 ; →4^26 = (2²)^26

j) = 3³⁴ / 3^37 = 1/3³ = 1/27 ; →9^17 = (3²)^17

k) = 3^90 / 3^91 = 1/3 ;→ 27^30 = (3³)^30

l) = 9^38 / 9^39 = 1/9;→ 81^19 = (9²)^19