Các câu hỏi tương tự
co bao nhieu cap so (x;y) thoa man dang thuc 3xy+x-1= 1
xy+3x-2y=11 co bao nhieu cap so nguyen x;y
co bao nhieu cap xy thoa man 3xy +x-y = 1
tim cap so nguyen X,Y biet 8x(2009-x)^2=25-y^2
tim cap so x,y nguyen biet :
a,\(|2x+3|+|2x-1|=\frac{8}{2|x-5|+2}\)
co bao nhieu cap x;y thoa man x(x+y)=-45 va y(x+y)=5
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 cac cap so nguyen (x:y)sao cho 3xy-2x+y=3
Tim (x,y) nguyen biet a) x + y = x : y = xy b) 2x + 3y + 3xy = 7