Question

me ajudem por favor!​

Answer 1

Oi....

a)

(- 2/3)³ + 1

- 2³/3³ + 1

- 8/27 + 1 ==>mmc = 27

- 8 + 27/27

19/27

b)

2  × √25 - √9/4

2 × 5 - 3/2

10 - 3/2⇒mmc = 2

20 - 3/2

17/2

c)

3/5 + ( - 1/2) + ( - 1/10)

3/5 - 1/2 - 1/10⇒mmc = 10

6 - 5 - 1/10

6 - 6/10

0/10

0

d)

5 - 1/2 + (+ 1/2)²

5 - 1/2 + 1/4⇒mmc = 4

20 - 2 + 1/4

19/4

e)

(- 1 + 1/2) - (- 1/6 + 2/3)

(- 2 + 1/2) - (- 1 + 4/6)

- 1/2 - 3/6

- 1/2 - 1/ 2⇒mmc =2

- 1 - 1/2

- 2/2

- 1

f)

(1/2 - 3/4) ÷ (1 - 2/5)

(2 - 3/4) ÷ (5 - 2/5)

- 1/4 ÷ 3/5

- 1/4 × 5/3

- 5/12

g)

[( - 1/2)³ + 2 × (- 1)⁴] ÷ 1/2

[- 1/8 + 2 × 1] × 2

[- 1/8 + 2] × 2

[- 1 + 16/8] × 2

15/8 ×2

30/8 ÷2

15/4

h)

- 3/5 × [ - 6 + 2 ÷ (- 1 + 1/2)]

- 3/5 × [- 6 + 2 ÷ (- 2 + 1/2)]

- 3/5 × [- 6 + 2 ÷(- 1/2)]

- 3/5 × [- 6 - 2 ÷ 1/2]

- 3/5 × [- 6 - 2× 2]

- 3/5 × [- 6 - 4]

- 3/5 × [- 10]

3 × 2

6

Espero ter ajudado.