Tuyển Cộng tác viên Hoc24 nhiệm kì 26 tại đây: https://forms.gle/dK3zGK3LHFrgvTkJ6
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 so nguyen x,y
a) x^2 - xy + x - y = 6
b) (x+ 2)^2 + 2(y - 3)^2 <4
tim cac cap so nguyen x , y thoa man : 2 . ( xy - 3 ) = x
Tim x,y la so nguyen
a) 2x-3y+5= xy
b) x mu 2 +2xy+2x+4y
B2 Tim x,y la so nguyen to
x mu 2 -2y mu 2 =1
B3 Tim so tu nhienx,y
7 .(x-2004) mu 2 = 23- y mu 2
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
tim cac so x,y thoa man :2x^2+y^2-2y=2(xy-1)
tim cac so nguyen x, y thoa man x>y>1 va 2x + 2y + 1 chia het cho xy
tim cap so nguyen (x,y) thoa man: x+y+xy=2
