Tim cac so nguyen x,y sao cho x - 2xy + y = 0
Tim so nguyen x,y sao cho; x-2xy+y=o
Tim cac so nguyen x,y sao cho x-y+2xy =3
1.Tim cac cap so nguyen x,y sao cho x+y=2xy
2.Tim GTNN A = x2+3(x-1)2
tim x,y nguyen :x-2xy+y=0
a.Tim 3 so a,b,c biet :3a=2b;5b=7c va 3a+5b-7c=60
b.tim cac cap so nguyen x,y sao cho x-2xy+y=0
tim x,y biet 5x^2 -2xy+ 2y^2=18 ; x,y la so nguyen
Tim cac cap so nguyen (x,y) thoa man:x-y+2xy=3
Tim so nguyen x va y biet : x2 - 2xy +y2 = 0
