Question

Calcule as expressões abaixo:

a) ( -1 )^0 + ( - 6 ) : ( -2 ) - 2
b) 2^9 : ( 2^2 . 2^3 ) ^-3

Answer 1

A- $(-1)^{0} + ( \frac{-6}{-2} ) -2 1 + 3 -2 = 4 -2 = 2$


*Obs: todo n° elevado a 0 equivale a 1


B- $\frac{2^{9}}{2^{2} . 2^{3}}$
   
$\frac{2^{9}}{2^{2} . 2^{3}}$
   
$\frac{512}{24}$
   
$\frac{64}{3}$

Answer 2

a) 1-6 : 4
-5:4
-1,25

b) 2^9 : (2^5)-^3
2^9 : 2^-15
2^24