Odpowiedź:
8.
a)
25 * 5³ * 5^0 = 5² * 5³ * 1 = 5^5
b)
1/81 * 1/9 * (1/3)^7 = 1/3^4 * 1/3² * 3^-7 = (1/3)^4 * (1/3)² * (1/3)^7 = (1/3)^7 * (1/3)^7 =
= (1/3)614
c)
9 * 3^9 * 27/(3^7 : 3^4) = 3² * 3^9 * 3³/3³ = 3^11
d)
7^11 : 49/(7^4 * 7³) = 7^11 : 7²/7^7 = 7^9/7^7 = 7²
9. (?)
a)
9 * 3^? * 81 = 3^10
3² * 3^? * 3^4 = 3^10
3^6 * 3^4 = 3^1
wiec
9 * 3^4 * 81 = 3^10
Szczegółowe wyjaśnienie: