Các câu hỏi tương tự
giai he phuong trinh
x+2\x+1\y=4
1\x^2+1\xy+x\y=3
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 phuong trinh xy+xz=2(x+y+z); xy+yz=3(x+y+z); xz+yz=4(x+y+z)
Giai he phuong trinh
\(xy=x+2y+3\)
\(4x^3-y^3=24x^3-45x^2+15y+41\)
giai he phuong trinh
2x3 +3x3y=1
xy3 -2x=3
giai he phuong trinh
\(2x^2-y^2+xy+y-5x+2=0\)
\(x^2+y^2+x+y-4=0\)
giai he phuong trinh x/x-1 + 2y/y+2 = 3 va 2x/x-1 - y/y+2 = -4
He phuong trinh: {\(2\left(y+1\right)^3=\frac{y}{x}\left(\frac{y}{x}+2\right)+2\left(1-y\right)\)
{\(2\left(y+x\right)^3=x\left(xy+x^2\right)-2x^2y+3\)