Question

Calcule o valor das expressões:

A) 3²-2³+(1/2)°=
B)2³=2.3² =
C)5¹ . 3-² +3-¹ -3 . 3°=

Answer 1

$3^2-2^3+(\frac{1}{2})^{2}=9-8+1=2\\\\2^3+2.3^2=8+2.9=8+18=26\\\\5^1.3^{-2}+3^1-3.3^0=5.(\frac{1}{3})^{2}+3-3.1=\frac{5}{9}+3-3=\frac{5}{9}$

Espero ter ajudado
Abraços!