Question

Calcule:︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎​

Answer 1

Resposta:

a) 1

b) -1

c) 1

d) 1

e) 1

f) 1

g) 1

h)-1

i) 1

j) -1

k) 1

L)-1