Violympic toán 7
Các câu hỏi tương tự
cho ham so 2 bien f(x,y) = x^3 +17x +36y ton tai hay khong so nguyen so nguyen x,y thoa man f(x,y) = 2018^2018
tim cac cap so nguyen ( x ; y ) thoa man : xy - x - y = 2
So nguyen a nho nhat thoa man: 2.(\(\frac{1}{2}\))a < (\(\frac{1}{4}\))20
tim phan so co mau khac 1 biet rang tich cua tu va mau la 210 va no co the viet duoc duoi dang so thap phan huu han, co ..................... phan so thoa man
so gia tri cua x thoa man |x-1|+|2x-6|=12
cap so tu nhien a, b thoa man (2018a+3b+1)x(2018a +2018a+b)=225
gia tri x thoa man 0.(12):(x-1)=1.(6):0.(4)
tim so tu nhien n<30 thoa man n,n+2,n+6 deu la snt
so bo (x;y;z) thoa man xy = \(\dfrac{2}{5}\); yz = \(\dfrac{3}{7}\);xz = -\(\dfrac{9}{13}\)