Bài 4:Giải hệ pt:\(\left\{{}\begin{matrix}\left(x+2\right)\left(y-3\right)=xy+1\\2\left(x+y\right)=5\end{matrix}\right.\)
Giải các hệ phương trình sau :
a, \(\left\{{}\begin{matrix}x^2+xy=y^2+1\\3x+y=y^2+3\end{matrix}\right.\)
b,\(\left\{{}\begin{matrix}x^2-y^2=4x-2y-3\\x^2+y^2=5\end{matrix}\right.\)
c, \(\left\{{}\begin{matrix}x^2+x-xy-2y^2-2y=0\\x^2+y^2=1\end{matrix}\right.\)
d,\(\left\{{}\begin{matrix}2\left(y+z\right)=yz\\xy+yz+zx=108\\xyz=180\end{matrix}\right.\)
giải hệ pt \(\left\{{}\begin{matrix}x-3y+2\sqrt{xy}=4\left(\sqrt{x}-\sqrt{y}\right)\\\left(x+1\right)\left(y+\sqrt{xy}-x^2+x\right)=4\end{matrix}\right.\)
giải hệ phương trình:\(\left\{{}\begin{matrix}\left(x-3\right)\left(y+6\right)=xy\\\left(x+2\right)\left(y-2\right)=xy\end{matrix}\right.\)
B4:Giải hệ pt:
a)\(\left\{{}\begin{matrix}4x+2y=14\\2x-2y=4\end{matrix}\right.\)
b)\(\left\{{}\begin{matrix}2x-4y=0\\3x+2y=8\end{matrix}\right.\)
c)\(\left\{{}\begin{matrix}2\left(x+y\right)+3\left(x-y\right)=4\\\left(x+y\right)+2\left(x-y\right)=5\end{matrix}\right.\)
d)\(\left\{{}\begin{matrix}\dfrac{1}{x}+\dfrac{1}{y}=\dfrac{1}{12}\\\dfrac{8}{x}+\dfrac{15}{y}=1\end{matrix}\right.\)
Giải các hệ phương trình sau :
a, \(\left\{{}\begin{matrix}x^2+xy=y^2+1\\3x+y=y^2+3\end{matrix}\right.\)
\(\left\{{}\begin{matrix}x=\dfrac{3}{4}y\\\dfrac{1}{2}\left(x+3\right)\left(y-2\right)-\dfrac{1}{2}xy=9\end{matrix}\right.\)
giải hệ phương trình
giải hpt: \(\left\{{}\begin{matrix}\left(2x-1\right)^2+4\left(y-1\right)^2=10\\xy\left(x-1\right)\left(y-2\right)=-\dfrac{3}{2}\end{matrix}\right.\)
giải các hệ phương trình
a)\(\left\{{}\begin{matrix}x^2+y^2=1\\x^3+y^3=1\end{matrix}\right.\) b) \(\left\{{}\begin{matrix}\dfrac{1}{x}-\dfrac{1}{y}=\dfrac{5}{12}\\x^2+y^2=1\end{matrix}\right.\)
c)\(\left\{{}\begin{matrix}x^2-xy+y^2=3\\2x^2-xy+3y^2=12\end{matrix}\right.\)