Question

1) Calcule as expressões :
a) (-10)²: 20 + 4
b) (-2)³ : ( - 2 )² - 3
c) (+3)²: 3 + 5

Answer 1

Boa Noite :)

A)

( - 10 )² ÷ 20 + 4 =

( - 10 ) × ( - 10 ) ÷ 20 + 4 =

100 ÷ 20 + 4 =

5 + 4 =

9

B)

( - 2 )³ ÷ ( - 2 )² - 3 =

( - 2 ) × ( - 2 ) × ( - 2 ) ÷ ( - 2 ) × ( - 2 ) - 3 =

( - 8 ) ÷ 4 - 3 =

- 2 - 3 =

- 5

C)

( + 3 )² ÷ 3 + 5 =

( + 3 ) × ( + 3 ) ÷ 3 + 5 =

9 ÷ 3 + 5 =

3 + 5 =

8

Bons Estudos!!!