\(x^2-xy+x-y=\) \(6\)
\(x\left(x-y\right)+\left(x-y\right)\)\(=6\)
\(\left(x+1\right)\left(x-y\right)\) \(=6\)
vì \(x,y\) thuộc Z
=> \(x+1,x-y\)thuộc ước của \(6\)
làm nốt nha
tim cac so nguyen x,y
a) xy-2x+y=5
b) x^2-xy+x-y=6
c) (x+2)^2+2(y-3)^2<4
tim cac so nguyen x,y
a) xy - 2x + y = 5
b) x^2 - xy + x - y = 6
c) (x + 2)^2 + 2(y - 3)^2 < 4
tim cac so nguyen x,y sao cho:
a) xy-2x+y=5
b) x2-xy+x-y=6
c) (x+2)2+2(y-3)2 < 4
tim cac cap so nguyen x , y thoa man : 2 . ( xy - 3 ) = x
cho x,y,z la cac so huu ti duong thoa man x+1/yz y +1/xz z+1/xy la cac so nguyen tim gia tri lon nhat cua bieu thuc A=x+y^2+z^3
1 tim cac so nguyen x,y biet x/7=6/21 -5/y=20/28 1/2=x/12 x/8=-28/32 3/y=12/24 3/4=15/y 2 viet 3 phan so bang phan so -10/15
1.Tim cac cap so nguyen x,y sao cho x+y=2xy
2.Tim GTNN A = x2+3(x-1)2
tim cac so nguyen x,y biet x^2-(y-3)x-2y-1=0
tim cac cap so nguyen duong nguyen to cung nhau sao cho: (x+y)/(x^2+y^2)=7/25
