Question

Determinati numerele reale a si b pentru care (a-2)+(b+2)=0

Answer 1

a-2=0
a=0+2
a=2

b+2=0
b=0-2
b=-2
(a-2)+(b+2)=0
(2-2)+(-2+2)=0
0+0=0

Answer 2

(a-2)+(b+2)=0
a=...
b=...