so cap so nguyen duong (a;b) thoa man a+2b=11 la
so cap so nguyen duong a;b thoa man a+2b=11
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
tim cac cap so nguyen duong nguyen to cung nhau sao cho: (x+y)/(x^2+y^2)=7/25
Co bao nhieu cap so nguyen duong (m,n) thoa cac dieu kien sau: 5n+3m=2015
Co bao nhieu cap so nguyen duong m,n thoa cac dieu kien sau:5m+3n=2015
cap so nguyen duong x;y thoa man |(x2+2).(y+1)| =9
tim cac cap so nguyen duong nguyen to cung nhau sao cho: (x+y)/(x^2+y^2)=7/25
mk can gap lam
cap so nguyen duong x y thoa man x(x-2)-(2-x)y-2(x-2)=3
cap cac so nguyen duong( x;y) tm |(x^2+2)*(y+1)|=9 la x;y bang...
so cap so nguyen duong (x,y) de p nhan gia tri so nguyên P=\(\frac{3x+3y+5}{x+y}\)