Các câu hỏi tương tự
tim x thuoc z sao cho \(x^2+102=y^2\)
tim x;y thuoc Z sao cho
x-2y+y=0
Tim x ,y thuoc Z : 2^x + 2^y = 72
tim x,y thuoc z thoa 2(x^2+y^2)=1978
tim x,y thuoc z thoa x^2+xy+y^2=x^2y^2
tim x y thuoc z biet (x+y).2=xy
bai 1 cmr
a)n^3+11n chia het cho 6 voi moi n thuoc Z
b)mn(m^2-n^2)chia het cho 3 voi moi m,n thuoc Z
bai 2 tim x,y thuoc Z
a)(x-1)(3-y)=(-7)
help me
tim x,y thuoc Z biet 25-y^2=9(x-2018)^2
tim cac so x,y,z thuoc Q biet rang (x+y):(5-z):(y+z):(y+9)=3:1:2:5