1. tim cac cap so nguyen duong (x, y) sao cho:
2 x3 + xy = 11
2. tim cac cap so nguyen duong (x, y, z)sao cho:
x + y + z = x*y*z
3. tim x thuoc z, biet;
|x| = -2003
|x| = |-2003|
minh dang can gap lam. chieu mai phai nop rui
Tim tat ca cac cap so x,y sao cho
(x - 1)(3 - y)= -7
Tim tat ca cac cap so nguyen x,y sao cho xy-2x+y+1=0
Tim tat ca cac cap so nguyen x,y sao cho
a) xy = 3
b) x(2y - 1)=8
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 cac cap so xy :(x-1).(y+2)=3
Tim cac cap so nguyen (x;y) sao cho x*y=x-y
tim cac so nguyen x,y sao cho :xy+12=x+y