Question

Cine l face are 500 de puncte

Answer 1

Răspuns:

a) x=1°(2°3)

x=1°1

x=1

y=4°(3°2)

y=4°4

y=1

z=(1°2)°(3°4)

z=1°2

z=1

b)x°2=4

x=3

4°x=2

x=2

x°2°x=1

x=1

c) x=1

y=1

si x=1

y=1