\(9y^2+\left(2y+3\right)\left(y-x\right)\) nha mn mik ghi sai đề
\(9y^2+\left(2y+3\right)\left(y-x\right)\) nha mn mik ghi sai đề
\(\left\{{}\begin{matrix}\sqrt{2x+y}+2\sqrt{x-2y+1}=5\\3\sqrt{x-2y+1}+y=3x+2\end{matrix}\right.\)
1,\(\left\{{}\begin{matrix}x^2+xy-3x+y=0\\x^4+3x^2y-5x^2+y^2=0\end{matrix}\right.\)
2, \(\left\{{}\begin{matrix}\left(2x-1\right)^2+4\left(y-1\right)^2=22\\xy\left(x-1\right)\left(y-2\right)=1\end{matrix}\right.\)
3, \(\left\{{}\begin{matrix}\left(x^2+y^2\right)\left(x+y+1\right)=25\left(y+1\right)\\x^2+xy+2y^2+x-8y=9\end{matrix}\right.\)
4,\(\left\{{}\begin{matrix}5x^2y-4xy^2+3y^2-2\left(x+y\right)=0\\xy\left(x^2+y^2\right)+2=\left(x+y\right)^2\end{matrix}\right.\)
a, giải pt 1, \(\sqrt{x+4}+\sqrt{x-4}=2x-12+2\sqrt{x^2-16}\)
2, \(\sqrt{2x+1}+3\sqrt{4x^2-2x+1}=3+\sqrt{8x^3+1}\)
b, giải hpt 1, \(\left\{{}\begin{matrix}x^2+4y^2-5=0\\4x^2y+8xy^2+5x+10y-1=0\end{matrix}\right.\)
2, \(\left\{{}\begin{matrix}x^2-2x+2y-3=0\\16x^2-8xy^2+y^4-2y+4=0\end{matrix}\right.\)
\(\left\{{}\begin{matrix}\sqrt{2x+y+1}-\sqrt{x+y}=1\\3x+2y=4\end{matrix}\right.\)
Giair HPT:
GHPT :
\(\left\{{}\begin{matrix}\sqrt{5x^2+2xy+2y^2}+\sqrt{2x^2+2xy+5y^2}=3\left(x+y\right)\\3x\left(y-7\right)+10=\sqrt{10x-2}+2\sqrt{8y-3}\end{matrix}\right.\)
Giải hệ phương trình :
\(\left\{{}\begin{matrix}4\left(2x\sqrt{2x-1}-y^3-3y^2\right)=15y+7+\sqrt{2x+1}\\\sqrt{\frac{y\left(y+2\right)}{2}}+\sqrt{6-x}=2x^2+2y^2-15x+4y+12\end{matrix}\right.\)
Giải hệ phương trình
\(\left\{{}\begin{matrix}3\sqrt{2x+y}+\sqrt{x-2y+1}=5\\2\sqrt{x-2y+1}-5x=10y+9\end{matrix}\right.\)
1.cho hệ PT:
\(\left\{{}\begin{matrix}x^2+y^2=2\left(m+1\right)\\\left(x+y\right)^2=4\end{matrix}\right.\)
xác định m để hệ PT có nghiệm duy nhất
2. giải HPT
\(\left\{{}\begin{matrix}x+y-\sqrt{xy}\\\sqrt{x+1}+\sqrt{y+1}=4\end{matrix}\right.\)
- giúp ạ !
Giải hệ phương trình sau
\(\left\{{}\begin{matrix}\sqrt{x}-\sqrt{x-y-1}=1\\x+y^2+2y\sqrt{x}-y^2x=0\end{matrix}\right.\)