\(\left\{{}\begin{matrix}5y-5x=xy\\\dfrac{1}{x}+\dfrac{1}{y}=\dfrac{4}{5}\\\end{matrix}\right.\)
\(\left\{{}\begin{matrix}\dfrac{1}{2x-3y}+\dfrac{5}{3x+y}=\dfrac{5}{8}\\\dfrac{3}{2x-3y}-\dfrac{5}{3x+y}=-\dfrac{3}{8}\\\end{matrix}\right.\)
\(\left\{{}\begin{matrix}x-y=2\\y-3z=2\\-3x-2y+z=-2\end{matrix}\right.\)
giải hệ phương trình:
a,\(\left\{{}\begin{matrix}\dfrac{1}{2}\left(x+2\right)\left(y+3\right)=\dfrac{1}{2}xy+50\\\dfrac{1}{2}\left(x-2\right)\left(y-2\right)=\dfrac{1}{2}xy-32\end{matrix}\right.\)
b,\(\left\{{}\begin{matrix}\dfrac{-1}{2}x+\dfrac{1}{3}y=0\\y-x=1\end{matrix}\right.\)
c,\(\left\{{}\begin{matrix}x\left(y-2\right)=\left(x+2\right)\left(y-4\right)\\\left(x-3\right)\left(2y+7\right)=\left(2x-7\right)\left(y+3\right)\end{matrix}\right.\)
Giải các hệ phương trình sau
a,\(\left\{{}\begin{matrix}\sqrt{3}x-y=\sqrt{2}\\x-\sqrt{2}y=\sqrt{3}\end{matrix}\right.\)
b, \(\left\{{}\begin{matrix}5\left(x-y\right)-3\left(2x+3y\right)=12\\3\left(x+2y\right)-4\left(x+2y\right)=5\end{matrix}\right.\)
c, \(\left\{{}\begin{matrix}\dfrac{x+2}{y-1}=\dfrac{x-4}{y+2}\\\dfrac{2x+3}{y-1}=\dfrac{4x+1}{2y+1}\end{matrix}\right.\)
Giải hệ phương trình:
1. \(\left\{{}\begin{matrix}\sqrt{x}+2\sqrt{-1}=5\\4\sqrt{x}-\sqrt{y-1}=2\end{matrix}\right.\)
2. \(\left\{{}\begin{matrix}\sqrt{3x-1}-\sqrt{2y+1}=1\\2\sqrt{3x-1}+3\sqrt{2y+1}=12\end{matrix}\right.\)
3. \(\left\{{}\begin{matrix}\sqrt{x-2}+\sqrt{y-3}=3\\2\sqrt{x-2}-3\sqrt{y-3}=-4\end{matrix}\right.\)
4. \(\left\{{}\begin{matrix}2\sqrt{x+1}-3\sqrt{-2}=5\\4\sqrt{x+1}+\sqrt{y-2}=17\end{matrix}\right.\)
Giải hệ phương trình sau: \(\left\{{}\begin{matrix}2x^3+x^2y=3\\2y^3+xy^2=3\end{matrix}\right.\)
Giải hpt \(\left\{{}\begin{matrix}\dfrac{12}{x+y}+\dfrac{12}{x-y}=\dfrac{5}{2}\\\dfrac{4}{x+y}+\dfrac{8}{x-y}=\dfrac{4}{3}\end{matrix}\right.\)
Giải hệ :
\(\left\{{}\begin{matrix}x^2\left(4y+1\right)-2y=-3\\x^2\left(x^2-12y\right)+4y^2=9\end{matrix}\right.\)
Giaỉ phương trình
a/ (x-3)4+(x+1)4=32
b/\(\left\{{}\begin{matrix}x^2-2x=3y\\y^2-2y=3x\end{matrix}\right.\)
Với giá trị nào của m thì hệ phương trình sau:
\(\left\{{}\begin{matrix}mx-y=\dfrac{1}{2}\\3x-2y=1\end{matrix}\right.\)
a) Vô nghiệm
b) Có nghiệm với tổng x+y lớn nhất.