Question

calcule o valor de cada expressão:
ME AJUDEM POR FAVOR!!!​

Answer 1

Resposta:

Espero ter ajudado S2

Explicação passo-a-passo:

Letra A -

(2 - 1/2) ² . (1 - 2/5)

(4/2 - 1/2)² . (5/5 - 2/5)

)3/2)² . (3/5)

(3/2 . 3/2) . 3/5

9/4 . 3/5

27/20

Letra B-

(3/4 + 1/2) : (3/2 - 3/4)

(3/4 + 2/4):(6/4-3/4)

5/4 : 3/4

5/4 . 4/3

20/12

Letra C-

(1 + 3/7)² . 49/80

(7/7 + 3/7)² . 49/80

(10/7)² . 49/80

(10/7 . 10/7) . 49/80

100/49 . 49/80

4900/3920

490/392

245/196

Letra D-

[(2/5+1/2) . 2/9 + (1/3)²] : 7/5

[(4/10+5/10) . 2/9 + (1/3.1/3)] : 7/5

[9/10 . 2/9 + 1/9] : 7/5

[18/90 + 10/90] : 7/5

28/90 : 7/5

14/45 . 5/7

70/315

14/63