Răspunsuri

2014-06-17T09:02:34+03:00
|x-2|+ (y-x)²=0

x-2+y-x=0

y-2=0

y=2

(2-x)²=0

2-x=0

-x=-2
x=2
2014-06-17T09:06:20+03:00
O suma este 0 daca  numerele sunt opuse
deci x=a
        y=-a
 x-2=0 ⇒x=2
x=a=2
y=-a=-2