Question

(0,02)-³.10-³+(0,004)-².10-² ?

Answer 1

(0,02)^3 . 10^3 + (0,004)^2 - 10^2 = 0,000008 . 1000 + 0,000016 - 100 = 0,008 + 0,000016 - 100 = 0,008016 - 100 = -99,991984

Answer 2

[( 2/100)⁻³   *  (10/1)⁻³] + [( 4/1000)⁻² * ( 10/1)⁻²] =
simplificando o que for possivel , invertendo e mudando expoente para positivo
[ (50/1)³ * (1/10)³ ]  + [ (250/1)²  * ( 1/10)² ]
[( 125.000/1) * ( 1/1000) ] + [ ( 62500/1 ) * ( 1/100 )] =
[ ( 125.000/1000)]  + [ ( 62500/100 )] = 
cortando os zeros
[ 125] + [ 625] =750