Question

14. A diferença 8 ⁰,⁶⁶⁶... - 9 ⁰,⁵ é igual a:
a)-2
b) 2-3
c)-2. 2
d) 1

?????​

Answer 1

$8^{0,666...}-9^{0,5}=$

$8^{2/3}-9^{1/2}=$

$\sqrt[3]{8^2}-\sqrt{9}=$

$\sqrt[3]{64}-3=$

$4-3=$

$1$

Gabarito: d)