a) x = [tex]\sqrt[3]{64} + 2\sqrt[3]{27}[/tex] = 4 + 2·3 = 4 + 6 = 10
y = [tex]\sqrt[3]{1000}[/tex] = 10
x = y
b) x = [tex]\sqrt[3]{125} - \sqrt[4]{16}[/tex] = 5 - 2 = 3
y = [tex]3\sqrt[3]{64} - 3\sqrt[4]{81}[/tex] = 3·4 - 3·3 = 12 - 9 = 3
x = y
c) x = [tex]\sqrt[4]{625} - \sqrt[5]{32}[/tex] = 5 - 2 = 3
y = [tex]3\sqrt[3]{64} - 3\sqrt[3]{27}[/tex] = 3·4 - 3·3 = 12 - 9 = 3
x = y
