Giải hệ phương trình:
a)\(\left\{{}\begin{matrix}x^2+xy+y^2=4\\x+xy+y=2\end{matrix}\right.\)
b)\(\left\{{}\begin{matrix}x^3=2y+1\\y^3=2x+1\end{matrix}\right.\)
c)\(\left\{{}\begin{matrix}x+y-\sqrt{xy}=3\\\sqrt{x+1}+\sqrt{y+1}=4\end{matrix}\right.\)
Giải hệ phương trình:
1, \(\left\{{}\begin{matrix}x^2+1+y^2+xy=y\\x+y-2=\frac{y}{1+x^2}\end{matrix}\right.\)
2, \(\left\{{}\begin{matrix}x^3+8y^3-4xy^2=1\\2x^4+8y^4-2x-y=0\end{matrix}\right.\)
3, \(\left\{{}\begin{matrix}x^2+y^2=\frac{1}{5}\\4x^2+3x-\frac{57}{25}=-y\left(3x+1\right)\end{matrix}\right.\)
4, \(\left\{{}\begin{matrix}\sqrt{12-y}+\sqrt{y\left(12-x\right)}=12\\x^3-8x-1=2\sqrt{y-2}\end{matrix}\right.\)
5, \(\left\{{}\begin{matrix}\left(1-y\right)\sqrt{x-y}+x=2+\left(x-y-1\right)\sqrt{y}\\2y^2-3x+6y+1=2\sqrt{x-2y}-\sqrt{4x-5y-3}\end{matrix}\right.\)
Giải hệ phương trình sau:
\(\left\{{}\begin{matrix}\sqrt{x}+\dfrac{3}{\sqrt{x}}=\sqrt{y}+\dfrac{3}{\sqrt{y}}\\2x-\sqrt{xy}-1=0\end{matrix}\right.\)
giải hệ pt bằng phương pháp thế:
1) \(\left\{{}\begin{matrix}x+y=3\\x+2y=5\end{matrix}\right.\)
2) \(\left\{{}\begin{matrix}x-y=3\\y=2x+1\end{matrix}\right.\)
3) \(\left\{{}\begin{matrix}2x+3y=4\\y-x=-2\end{matrix}\right.\)
4) \(\left\{{}\begin{matrix}x=y+2\\x=3y+8\end{matrix}\right.\)
5) \(\left\{{}\begin{matrix}2x-y=1\\3x-4y=2\end{matrix}\right.\)
giúp mk vs ạ mai mk hc rồi
Giải hệ phương trình sau:
\(\left\{{}\begin{matrix}3x-2\left|y\right|=9\\2x+3\left|y\right|=1\end{matrix}\right.\)
\(\left\{{}\begin{matrix}\left|x-2\right|+2\left|y-1\right|=9\\x+\left|y-1\right|=-1\end{matrix}\right.\)
Giải hệ phương trình:
a)\(\left\{{}\begin{matrix}\left|2x-y\right|-2\left|y-x\right|=1\\3\left|2x-y\right|+\left|x+y\right|=10\end{matrix}\right.\)
b)\(\left\{{}\begin{matrix}\left(\dfrac{x}{y}\right)^2+\left(\dfrac{x}{y}\right)^3=12\\\left(xy\right)^2+xy=6\end{matrix}\right.\)
Giải hệ phương trình: \(\left\{{}\begin{matrix}x+\dfrac{2xy}{\sqrt[3]{x^2-2x+9}}=x^2+y\\y+\dfrac{2xy}{\sqrt[3]{y^2-2y+9}}=y^2+x\end{matrix}\right.\)
Giải hệ phương trình sau: \(\left\{{}\begin{matrix}\sqrt{3+2x^2y-x^4y^2}+x^2\left(1-2x^2\right)=y^4\\1+\sqrt{1+\left(x-y\right)^2}+x^2\left(x^4-2x^2-2xy^2+1\right)=0\end{matrix}\right.\)
Giải hệ phương trình: \(\left\{{}\begin{matrix}2\left(x+y\right)=3\left(\sqrt[3]{x^2y}+\sqrt[3]{xy^2}\right)\\\sqrt[3]{x}+\sqrt[3]{y}=6\end{matrix}\right.\)