\(=x\left(y+4\right)+2\left(y+4\right)\\= \left\{{}\begin{matrix}y+4=0\\x+2=0\end{matrix}\right.\left\{{}\begin{matrix}y=0-4=-4\\0-2=-2\end{matrix}\right.\)
xy-6x+2y-7=0
xy+4x-3y+2=10
1,xy-6x+2y-7=0
2,xy+4x-3y+2=10
a,xy-x+y=1
b,xy+3x-2y=0
c,2x-xy+4x=3-y
Tìm x,y thuộc Z
a) -12.(x-5)+7.(3-x)=5
b) x+{(x-3) - [(x+3)-(-x-2)]} = x
c) xy + 4x-2y =8
d) (x-5).(x+3)<0
e) 3x + 4y - xy=16
f) (x+2).(x-7)>0
6)2xy+x=6y+8
7)xy+12=x+y
8)x^2+xy-x-y=0
9)xy^2-xy+y-3=0
10)xy+7x-2y-14=0
tìm x,y thuộc z (tập hợp z),biết
xy+4x+2y+5=0
Tìm số nguyên x biết
a,3x+3y-2xy=7
b,xy+2x+y+11=0
c,xy+x-y=4
d,2x.(3y-2)+(3y-2)=12
e,3x+4y-xy=15
f,xy+3x-2y=11
g,xy+12=x+y
h,xy-2x-y=-6
i,xy+4x=25+5y
ii,2xy-6y+x=9
iii,xy-x+2y=3
k,2.x^2.y-x^2-2y-2=0
l,x^2.y-x+xy=6
Tìm x,y thuộc Z:
a) 2y-5x-3y+8=0
b)xy-x-y-4=0
c)xy-x+2y-5=0
d) 2x-xy-1-y=0
e)xy+2x-4y=13
f)2xy-2x+y-6=0
g)2y-xy-2x= -1
Giúp mk đi mk đang cần gấp lắm.Ai nhanh mình tick cho
tìm x,y \(\varepsilon\)Z
a, xy - x + 2y = 15
b, x + y = xy
c, xy - 2y + 3x = 8
d, xy - x + 5y - 7 = 0
giúp mình nhé
