Các câu hỏi tương tự
cho x, y , z la cac so nguyen thoa man x . y - x. z + y.z - z^2 +1 =0 chung minh rang x+ y =0
Cho x,y,z la 3 so nguyen duong, nguye to cung nhau thoa man (x-z)(y-z)=z^2. Chung minh tich xyz la so chinh phuong
Giai nhanh jum mik nha dg can gap
Tim cac so nguyen x, y, z thoa man x/y +y/z+z/x =y/x+/y+x/z=x+y+z=3
tim cac so nguyen x,y,z thoa man dieu kien sau
x^2=y-1
y^2=z-1
z^2=x-1
cho x, y,z >0 chung minh rang\(\frac{x}{2x+y+z}+\frac{y}{2y+x+z}+\frac{z}{2z+x+y}< hoac=\frac{3}{ }4\)3/4
tim cac so nguyen duong x,y,z thoa man x^2+y^3+z^4
cac ban oi giup minh voi
1.tim a,b thuoc Z,biet:a.(2b-3)=-6
2.cho x,y thuoc Z thoa man x mu 2 +y mu 2 chia het cho 3.chung to x va y chia het cho 3.
cho x=a/b va y=b/m voi a,b,m thuoc Z ;m>0 va x<y .Chung minh rang Z=a+b/2m thi x<Z<t
Tim cac so nguyen x , y , z biet:
|x.y-10|+|y.z+15|+|zx+6|≤0
Trinh bay cach lam ho minh voi nhe