Question

va rog ex 17 dau coroana va implor!!!!!

Answer 1

Răspuns

Explicație pas cu pas:

2^20 / (2^18 + 2^19) = 2^20 / 2^18 (1 + 2) = 2^2/3 = 4/3

(5^21 - 5^20) / 5^21 = 5^20(5 - 1)/5*5^20 = 4/5

(3^15 + 3^17)/3^18 = 3^15(1 + 3^2) / 3^15 * 3^3 = 10/27

(2^92 - 2^90)/(2^90 + 2^93) = 2^90(2 - 1)/2^90 (1 + 8) = 1/9

(5^42 - 5^40)/(5^43 - 5^42) = 5^40(25 - 1)/5^40(125 - 25) = 24/100 = 6/25

(6^53 + 6^54)/(6^56 - 6^54) = 6^53 (1 + 6)/6^53(216 - 6) = 7/210 = 1/30

(7^87 - 7^85)/(7^88 + 7*87) = 7^85(49 - 1)/7^85(343 + 49) = 48/392 = 24/196 = 12/98 = 6/49