Các câu hỏi tương tự
giai he phuong trinh sau :
x^3 - x^2 y^2 - y^3 + 1 = 0 va x^3 + xy - 2 = 0
giai he phuong trinh
\(\hept{\begin{cases}x+y+\frac{1}{x}+\frac{1}{y}=\frac{9}{2}\\xy+\frac{1}{xy}+\frac{x}{y}+\frac{y}{x}=5\end{cases}}\)
giai he phuong trinh x/x-1 + 2y/y+2 = 3 va 2x/x-1 - y/y+2 = -4
giai he phuong trinh
2(x+y) + √(x+1) = 4
(x+y) - 3√(x+1)=-5
giai he phuong trinh 2x^2-xy=xy^2_2x+y
(x^2+2y^2)(1+1/xy)^2=3
/x+y/ +/y-2/=2
/x-1/+y =3
giai he phuong trinh
Giai he phuong trinh
\(xy=x+2y+3\)
\(4x^3-y^3=24x^3-45x^2+15y+41\)
giai phuong trinh xy+xz=2(x+y+z); xy+yz=3(x+y+z); xz+yz=4(x+y+z)
Giai he phuong trinh: \(\hept{\begin{cases}\frac{2}{x}+\frac{5}{x+y}=2\\\frac{3}{x}+\frac{1}{x+y}=1,7\end{cases}}\)