tim cac cap so nguyen m , n thoa man : 2^m - 2^n =2048
Tim tat ca cac so nguyen x thoa man: (x+2014)^2=64.(x+2007)^3
tim tat ca cac cap so nguyen x,y thoa man 2^x+1.3^y=12^x
tim tat ca cac so nguyen duong x,y thoa man : 2011x+7y=42231
tim tat ca cc so nguyen n thoa man cac dang thuc sau 25n/5n = 53n , ta co
A n=3
B n=-1
C n=1
D n=-3
tim tat ca cac so nguyen n sao cho n^2+4 chia het n+2
tim m,n nguyen duong thoa man:2m+2n=2m+n
tim tat ca cac so nguyen duong n sao cho:2^n-1 chia het cho 7
tim tat ca cac so nguyen duong n sao cho 2^n- chiahet cho 7