Question

Resolva as seguintes expressões numéricas ​

Answer 1

Resposta:

a) √49-{√16-[2-(4-8)+1]}=

= 7-{4-[2-(-4)+1]}

= 7-[4-(2+4+1)]

= 7-(4-7)

= 7-(-3)

= 7+3

= 10

b) [(18+3.2)÷8+5.3]÷6=

= (18+6)÷8+15]÷6

= (24÷8+15)÷6

= (3+15)÷6

= 18÷6

= 3

c) {[(8.4+3)÷7+(3+15÷5).3].2-(19-7)÷6}=

= {[(32+3)÷7+(3+3).3].2-12÷6}

= (35÷7+6.3).2-2

= (5+18).2-2

= 23.2-2

= 46-2

= 44

Espero ter ajudado!!

:)