Question

what is 3 root of − 81 end root? a. − 3 3 root of 3 b. 3 3 root of − 9 end root c. − 9 3 root of 3 d. 6 3 root of − 3 end root

Answer 1

`\sqrt[3]{-81}=\sqrt[3]{-27\cdot3}=\sqrt[3]{-27}\cdot\sqrt[3]3=\boxed{-3\sqrt[3]3}\to\boxed{a.}`