Odpowiedź:
zad 18
w = ∛64 = ∛4³ = 4
x = ∛(5 * 5 * 5) = ∛5³ = 5
y = ∛(- 2/3)³ = - ∛(2/3)³ = - 2/3
z = (∛(- 4)³ = ∛(-4)³ = - ∛4³ = - 4
Porządek rosnący
z , y , w , x
zad 19
a) 4∛5 = ∛(4³ * 5) = ∛(64 * 5) = ∛320
b) 2∛(3 3/4) = ∛(2³ * 3 3/4) = ∛(8 * 15/4) = ∛(2 * 15) = ∛30
c) 2/3∛135 = ∛[(2/3)³ * 135] = ∛(8/27 * 135) = ∛(8 * 5) = ∛40
