mk hc nghu lém mk giải ko dc nhưng cho mk xin nha mấy bn yêu mấy bn nh`
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a)Tim tat ca cac so nguyen duong x, y , z thoa man: \(\frac{x+y\sqrt{2013}}{y+z\sqrt{2013}}\)la so huu ti, dong thoi x2 + y2+ z2 la so nguyen to.
b) Tim so tu nhien x, y thoa man: x(1+x+x2) = y(y-1).
Tim tat ca cac so nguyen x,y thoa man x^2 + 8y^2 - 6y - 2x + 6y + 6 = 0. ai biet giai giup minh voi,toan nang cao lop 9 do,cam on moi nguoi nhieu
tim cac cap so nguyen thoa man phuong trinh sau:
a)2x+y=0
b)6x-15y=4
a)Tim cap (x,y) nguyen duong thoa man xy=3(y-x)
b)cho 2 so x,y >0 thoa man x+y = 1
Tim GTNN cua M=(x^2+1/y^2)(y^2+1/x^2)
tim cac cap so nguyen thoa man cua phuong trinh sau:
a)2x+y=0
b)6x-15y=4
tim tat ca cac bo ba so (x,y,z) thoa man x+y=1+\(\sqrt{z}\) va 2x.y=1+z
Tim cac so x, y la cac so nguyen thoa man: \(\frac{2}{x+y\sqrt{5}}-\frac{3}{x-y\sqrt{5}}=-9-20\sqrt{5}\)
1.Tim tat ca cac cap so nguyên sao cho x^3 -x^2y+3x-2y-5=0
2. Cho0<x,y,z =<1 . CMR : x/(1+y+xz) + y/(1+z+xy) +z/(1+x+yz) =< 3/(x+y+z)
tim cac so nguyen thoa man dang thuc x3 - 4*x2-x*y+5*x+y+3=0