giai he phuong trinh
x+2\x+1\y=4
1\x^2+1\xy+x\y=3
giai he phuong trinh x/x-1 + 2y/y+2 = 3 va 2x/x-1 - y/y+2 = -4
giai phuong trinh va he phuong trinh sau:
x2 + 5x -6=0
b{4x+5y=3
{x-3y=5
giai mau giup toi nhe cac ban
giai he phuong trinh
\(2x^2-y^2+xy+y-5x+2=0\)
\(x^2+y^2+x+y-4=0\)
cho he phuong trinh 3x-y=2m+3 va x+2y=3m+1 tim m de he phuong trinh co 2 nghiem x y thoa man x^2+y^2=5
Giai he phuong trinh bang phuong phap cong va phuong phap the
<=> \(\left\{{}\begin{matrix}4x+3x=-6\\\dfrac{x+3y}{3}-\dfrac{y-2}{5}=1\end{matrix}\right.\)
giai he phuong trinh 2x^2-xy=xy^2_2x+y
(x^2+2y^2)(1+1/xy)^2=3
giai he phuong trinh\(\left(x^2+1\right)\left(y^2+1\right)+8xy=0\)
va \(\frac{x}{^{x^2+1}}+\frac{y}{y^2+1}=\frac{-1}{4}\)
giai phuong trinh xy+xz=2(x+y+z); xy+yz=3(x+y+z); xz+yz=4(x+y+z)
