9+2.1=11
7+2.2=11
5+2.3=11
3+2.4=11
1+2.5=11
Có 5 cặp tất cả
9+2=11
7+2.2=11
5+2.3=11
3+2.4=11
1+2.5=11
=>có 5 cặp thỏa mãn dề bài
so cap so nguyen duong (a;b) thoa man a+2b=11 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
cap so nguyen duong x;y thoa man |(x2+2).(y+1)| =9
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
Co bao nhieu phan so a/b ( voi a,b nguyen duong) thoa man a + b = 12.
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
tim cac so nguyen duong a,b,c thoa man a+b+c=91 va b^2=a*c
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;)