Question

preciso da resposta​ ​

Answer 1

Resposta:

a) (√21)²= √21

b) (∛4)²= ∛4²=∛16= 2∛2

c) (8√3)²=64 × 3=192

d) $(\sqrt[4]{2})^{9}$=2²$\sqrt[4]{2}$= 4$\sqrt[4]{2}$