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a fost răspuns

Rezolva ecuatiile:
a) (x+y-2)^2+(2x-y+1)^2= 0
b) |2x-y+1| + |x+2y+3| = 0

Răspuns :

Ralucagabi
a)(x+y-2)²+(2x-y+1)²=0 (x+y-2+2x-y+1)(x+y-2-2x+y-1)=0 (3x-1)(-x+2y-3)=0 3x-1=0 -x+2y-3=0 0*0=0

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