Question

calcule o valor de:

a) (2-1/3) × (2+1/3)

b)(3/2-1)² - 8 × (-5/4)

c) (-5/2+0,3)÷ 10​

Answer 1

a)

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

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

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

5/3 * 7/3

35/9

b)

(3/2 -1)² - 8 * (- 5/4)

(3/2 - 2/2)² - 8 * (- 5/4)

(1/2)² - 8 * (- 5/4)

1/4 + 8/1 * (5/4)

1/4 + 40/4

41/4

c)

(- 5/2 + 0,3) ÷ 10

(- 5/2 + 3/10) ÷ 10

(- 25/10 + 3/10) ÷ 10

- 22/10 ÷ 10/1

- 11/5 ÷ 50/5

- 11/5 * 5/50

- 55/250

- 11/50