so cap so nguyen duong a;b thoa man a+2b=11
biet (a;b) la 1 cap so nguyen thoa man (a+1).(b+2)=3khi do a.b co gia tri lon nhat
Cho x;y la so nguyen sao cho | x | + | y | = 5. So cap so nguyen ( x;y ) thoa man la
a, co bao nhieu cap so nguyen ( x,y ) thoa man x + y=1
b. co bao nhieu cap so nguyen ( x,y ) thoa man x.2 + y =1
cho 3 so a,b,c la so nguyen . Trong do co 1 so nguyen am , 1 so nguyen duong va 1 so bang 0 , thoa man IaI=b^2.(b-c) . Hoi a,b,c thuoc loai so nao
cho 2017 so nguyen thoa man tich cua 17 so nguyen bat ki la mot so nguyen duong .chung minh 2017 so nguyen da cho deu la so nguyen duong
toan lop 6
Cap so nguyen duong ( x,y ) thoa man |(x2 + 2).(y + 1)| = 9 la (x,y)=.....
(Nhap cac gia tri theo thu tu , cach nhau boi dau;)
so cap so nguyen x,y thoa man dieu kien 3/x+y/3=5/6 la ... cap
cho 2 so x;y la cac so nguyen sao cho :/x/ +/y/ = 2 so cap (x;y) thoa man la
