a)
3 ∛-0,125 - 2 ∛-125 = 3*(-0,5)-2*(-5)=-1,5+10=8,5
b)
3 ∛-0,008 * ∛-0,00032 = 3*(-0,2)*\sqrt[3]{(-0,2)^5}=-0,6*(-\sqrt[3]{0,2^5})=-0,6*(-\sqrt[3]{0,2^3*0,2^2}) = -0,6* (-0,2)*\sqrt[3]{0,2^2}=0,12\sqrt[3]{0,04}
c)
∛-2 * ∛- 500 = \sqrt[3]{(-2)*(-500)}=\sqrt[3]{1000}=10
d)
∛-56 : ∛7 = \sqrt[3]{-56:7}=\sqrt[3]{-8}=-\sqrt[3]8=-2
e)
∛-15 : ∛-120 =\sqrt[3]{\frac{-15}{-120}} = \sqrt[3]{\frac{1}{8}}=\frac{1}{2}
f)
∛-4 * ∛-2 + ∛16 * ∛4=\sqrt[3]{(-4)*(-2)} + \sqrt[3]{16*4}=\sqrt[3]{8} + \sqrt[3]{64}=2+8=10