SIMPLIFICANDO A EXPRESSÃO NUMÉRICA [10-4(-1)^2]: [2/3]^-2 OBTÉM-SE
A) 63/2
B) 8/3
C) 56/9
D) 27/2
E) 9/2
A) 63/2
B) 8/3
C) 56/9
D) 27/2
E) 9/2
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[ 10 - 4 ( 1 ) ] : [ ( 3/2)² ]
Nota explicativa
2/3⁻² = torna positivo o expoente e inverte a base ***
[ 10 - 4 ] : [ ( 9/4)]=
( 6/1 ) : ( 9/4) =
6/1 * 4/9 = 24/9 = 8/3 **** ( b )