Question

1) Resolva as expressões a seguir:

a) (1/2 + 3/4 ÷ 5/2)²

b) (2/3 ÷ 5/9 - 3/5 × 2/6)³ × √64/121​

Answer 1

a) ( 1/2 + 3/4 ÷ 5/2 )²

( 1/2 + 6/20 )²

( 1/2 + 3/10 )²

( 1/10 + 3/10 )²

( 4/10 )²

4/10 × 4/10

16/ 100 ou 0,16 ou 16%

b) ( 2/3 ÷ 5/9 - 3/5 × 2/6 )³ × √64/121

( 18/15 - 6/30 )³ × √64/121

( 6/5 - 3/15 )³ × √64/121

( 6/5 - 1/5 )³ × √64/121

( 5/5 )³ × √64/121

1³ × √64/121

1 × √64 ÷ √121

1 × 8 ÷ 11

8 ÷ 11

0,7272...

Espero ter ajudado!