Tim tat ca cac cap so nguyen x,y sao cho xy-2x+y+1=0
tim cap so nguyen x;y biet (x-1).(xy+2)=5
Tim cac cap so nguyen x,y
a,x . ( y - 3 ) = -12
b,xy - 3x - y = 0
c,xy + 2x + 2y = -16
tim tat ca cac cap so nguyen x, y sao cho : xy - 2x + y + 1 = 0
tim cap so nguyen x,y : 3x - xy - y=-1996
tim cac cap so nguyen (x,y)biet:
xy+3y+x=2
x^2-x+xy =4
tim cap so nguyen x, y
Tim tat ca cac cap so nguyen x,y sao cho
a) xy-2x-2y=0
b) 20x + 10y =2010
Tim cac cap so nguyen x,y thoa man
a) xy-5x+y=17
b) x.(y-2)=3 va x>y
