Question

encontre o valor das expressoes:
a)7²- 40 + 18 : 3² - 10°

b) (6²- 5²) x 3³ - 10²

c) 6² : (2³ + 1) x (3² - 5)

d) (7 x 3² - 1) : (8² - 2 x 31)

Answer 1

a) 7² - 40 + 18 : 3² - 10° =

49 - 40 + 18 ÷ 9 - 1 =

9 + 1 = 10

b) (6²- 5²) x 3³ - 10² =

(36 - 25) × 27 - 100 =

11 × 27 - 100 =

297 - 100 = 197

c) 6² : (2³ + 1) x (3² - 5) =

36 ÷ (8 + 1) × (9 - 5) =

36 ÷ 9 × 4 =

4 × 4 = 16

d) (7 x 3² - 1) : (8² - 2 x 31) =

(7 × 9 - 1) ÷ (64 - 2 × 31) =

(63 - 1) ÷ (64 - 62) =

62 ÷ 2 = 31