/-ułamek
^-do potęgi...
*-mnożenie
Stosując prawa działań na potęgach, oblicz:
a) (7/4)^2/5 * (7/4)^3/5
b) 3^1/3 * 3^5/3
c) 2^1/2 * 8^1/2
d) 5^1/3 * 25^1/3
e) 108^1/3 * 2^1/3+7^1/3 * 49^1/3
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b) = 3^(1/3 +5/3) = 3 ^ 2 = 9
c) = 2^1/2 · (2^3)^1/2 = 2 ^1/2·2^3/2 = 2 ^ 2 = 4
d) = 5^1/3 · (5²)^1/3 = 5^1 = 5
e) = (108·2)^1/3 + (7·49)^1/3 = (6³)^1/3 + (7³)^1/3 = 6 + 7 = 13