Question

Resolva as expressões numéricas abaixo: a) 5² - 2³ =

b) 5.3 + 4.2 - 5.2 =

c) 3.6 + 4.2 =

d) -36 + 12 =

e) -5.(-2) - 4.(+2) - 12

= f) -2.(-2)² - 3.(-2) + 2.(-3)² =​

Answer 1

Resposta:

a) 5×5 - 2×2×2 = 25 - 8 = 17

b) 5.3 + 4.2 - 5.2 = 4.3

c) 3.6 + 4.2 = 7.8

d) - 36 + 12 = -24

e) -5 × -2 - 4 . +2 -12 = - 10 - 4 . -10 = -14 × -10 = -140

f) -2 . -4 - 3 . - 2 + 2 × - 6 = -8 -3 × -2 + 2 × - 6 = -11 × - 2 + 2 × - 6 = - 121 + 2 × - 6 = - 119 × - 6 = - 714