Giải hpt :
1. \(\left\{{}\begin{matrix}x^2+xy\left(2y-1\right)=2y^3-2y^2-x\\6\sqrt{x-1}+y+7=4x\left(y-1\right)\end{matrix}\right.\)
2. \(\left\{{}\begin{matrix}x\sqrt{x^2+y}+y=\sqrt{x^4+x^2}+x\\x+\sqrt{y}+\sqrt{x-1}+\sqrt{y\left(x-1\right)}=\frac{9}{2}\end{matrix}\right.\)
3.
giải hệ pt
\(\left\{{}\begin{matrix}\frac{8xy}{x^2+6xy+y^2}+\frac{17}{8}\left(\frac{y}{x}+\frac{x}{y}\right)=\frac{21}{4}\\\sqrt{x-16}+\sqrt{y-9}=7\end{matrix}\right.\)
B1 GPT
a,\(\left\{{}\begin{matrix}x^3=5x+y\\y^3=5y+x\end{matrix}\right.\)
b,\(\left\{{}\begin{matrix}x^2+y^4=20\\x^4+y^2=20\end{matrix}\right.\)
c,\(\sqrt{x+1}=x^2+4x+5\)
Giải hệ sau
\(\left\{{}\begin{matrix}\left(3-\dfrac{5}{y+42x}\right)\sqrt{2y}=4\\\left(3+\dfrac{5}{y+42x}\right)\sqrt{x}=2\end{matrix}\right.\)
Giải hệ phương trình \(\left\{{}\begin{matrix}x+\sqrt{1-y^2}=1\\y+\sqrt{1-x^2}=1\end{matrix}\right.\)
Giải hệ sau
\(\left\{{}\begin{matrix}\sqrt{x^2+x+y+1}+x+\sqrt{y^2+x+y+1}+y=18\\\sqrt{x^2 +x+y+1}-x+\sqrt{y^2+x+y+1}-y=2\end{matrix}\right.\)
Giải hệ sau
\(\left\{{}\begin{matrix}\sqrt{\dfrac{x}{y}+\sqrt{\dfrac{y}{x}}}=\dfrac{7}{\sqrt{xy}+1}\\x\sqrt{xy}+y\sqrt{xy}=78\\x>0\\y>0\end{matrix}\right.\)
Giải hệ phương trình:
\(\left\{{}\begin{matrix}x^4-4x^2+y^2-6y+9=0\\x^2y+x^2+2y-22=0\end{matrix}\right.\)
Giải:
\(\left\{{}\begin{matrix}\left(3-\dfrac{5}{y+42x}\right)\sqrt{2y}=4\\\left(3+\dfrac{5}{y+42x}\right)\sqrt{x}=2\end{matrix}\right.\)
