Question

a) 19 – (- 20) : ( - 2) =
b) ( - 56) : ( + 8) + ( - 49) : ( - 7) =
d) 2. (- 5)2 – ( - 7)2 =
e) ( - 4)2 – 52 =

Answer 1

Resposta:

a) 9

b)0

c) -6

d)-60

Explicação passo-a-passo:

-8-52=-60