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tim cac cap so nguyen to x,y: x.y=2x+2y
Tim tat ca cac cap so nguyen x,y sao cho
c) (x - 2) (2y + 1)=4
Tim cac cap so nguyen x;y biet : (2x-1)*(y-4)=-13
Tim cac cap so nguyen x,y biet
a,xy=-5
b,(x+2)(2y-3)=8
c,(x-2)^2+(2x-y)^4=0
d,|x|+|y|=1
e,|2x+1|+|y|=4
f,|x-13|+|2y-8|<hoac= 0
g,|x-5|+|y+2|=2
h,|x+3|+|2y+1|=3
Tim tat ca cac cap so nguyen x,y sao cho
a) xy-2x-2y=0
b) 20x + 10y =2010
Tim tat ca cac cap so nguyen x,y sao cho xy-2x+y+1=0
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
a) xy = 3
b) x(2y - 1)=8
Tim cap so nguyen x,y
A . x.y -2x - 2y = 0
20x + 10y = 2010
