Tim cac so nguyen thoa man (x+y)^2=(x-1)(y+1)
tim cac so huu ti x y thoa man x+y va 1/x +1/y nguyen duong
tim cac so nguyen x, y thoa man x>y>1 va 2x + 2y + 1 chia het cho xy
tim cac so tu nhien x y z khac 0 thoa man dieu kien x+y+z = xyz
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
x^2 - x <y-1> +y + 3 =0
tim cac cap so nguyen x y thoa man
giup mk voi
tim cac so nguyen to x y z thoa man 3(x+y+z)=xyz
c1: Tap hop cac gia tri nguyen cua x thoa man \(\left(x+\frac{5}{4}\right)\left(x-\frac{19}{7}\right)\)<0
c2: Neu x,y la cac so nguyen thoa man 2xy+4y=6 thi y co the nhan nhung gia tri nam trong tap hop nao
c3: tim 3 so x,y,z biet x+y=8,x+z=10,y+z=12
C4: Gia tri cua x thoa man (x+3)^2=25 va x^3>0 la x=
tim cac so nguyen x ,y,z thoa man /x-y/+/y-z/+/z-x/=2015