3 tháng 3 2019 lúc 22:54
Các câu hỏi tương tự
1,hept{begin{cases}sqrt{x}+sqrt{y}3sqrt{x+5}+sqrt{y+3}5end{cases}}2,hept{begin{cases}xleft(x+y+1right)-30left(x+yright)^2-frac{5}{x^2}+10end{cases}}3,hept{begin{cases}xy+x+yx^2+2y^2xsqrt{2y}-ysqrt{x-1}2x-2yend{cases}}4,hept{begin{cases}xy+x+17yx^2y^2+xy+113y^2end{cases}}5,hept{begin{cases}2yleft(x^2-y^2right)3xxleft(x^2+y^2right)10yend{cases}}
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\(1,\hept{\begin{cases}\sqrt{x}+\sqrt{y}=3\\\sqrt{x+5}+\sqrt{y+3}=5\end{cases}}\)
\(2,\hept{\begin{cases}x\left(x+y+1\right)-3=0\\\left(x+y\right)^2-\frac{5}{x^2}+1=0\end{cases}}\)
\(3,\hept{\begin{cases}xy+x+y=x^2+2y^2\\x\sqrt{2y}-y\sqrt{x-1}=2x-2y\end{cases}}\)
\(4,\hept{\begin{cases}xy+x+1=7y\\x^2y^2+xy+1=13y^2\end{cases}}\)
\(5,\hept{\begin{cases}2y\left(x^2-y^2\right)=3x\\x\left(x^2+y^2\right)=10y\end{cases}}\)
Giải hệ phương trình:1) hept{begin{cases}sqrt[3]{x-y}sqrt{x-y}x+ysqrt{x+y+2}end{cases}}2) hept{begin{cases}x-frac{1}{x}y-frac{1}{y}2yx^3+1end{cases}}3) hept{begin{cases}left(x-yright)left(x^2+y^2right)13left(x+yright)left(x^2-y^2right)25end{cases}left(x;yin Rright)}4) hept{begin{cases}3yfrac{y^2+2}{x^2}3xfrac{x^2+2}{y^2}end{cases}}5) hept{begin{cases}x+y-sqrt{xy}3sqrt{x+1}+sqrt{y+1}4end{cases}left(x;yin Rright)}6) hept{begin{cases}x^3-8xy^3+2yx^2-33left(y^2+1right)end{cases}left(x;yin Rright)}7)...
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Giải hệ phương trình:
1) \(\hept{\begin{cases}\sqrt[3]{x-y}=\sqrt{x-y}\\x+y=\sqrt{x+y+2}\end{cases}}\)
2) \(\hept{\begin{cases}x-\frac{1}{x}=y-\frac{1}{y}\\2y=x^3+1\end{cases}}\)
3) \(\hept{\begin{cases}\left(x-y\right)\left(x^2+y^2\right)=13\\\left(x+y\right)\left(x^2-y^2\right)=25\end{cases}\left(x;y\in R\right)}\)
4) \(\hept{\begin{cases}3y=\frac{y^2+2}{x^2}\\3x=\frac{x^2+2}{y^2}\end{cases}}\)
5) \(\hept{\begin{cases}x+y-\sqrt{xy}=3\\\sqrt{x+1}+\sqrt{y+1}=4\end{cases}\left(x;y\in R\right)}\)
6) \(\hept{\begin{cases}x^3-8x=y^3+2y\\x^2-3=3\left(y^2+1\right)\end{cases}\left(x;y\in R\right)}\)
7) \(\hept{\begin{cases}\left(x^2+1\right)+y\left(y+x\right)=4y\\\left(x^2+1\right)\left(y+x-2\right)=y\end{cases}\left(x;y\in R\right)}\)
8) \(\hept{\begin{cases}y+xy^2=6x^2\\1+x^2y^2=5x^2\end{cases}}\)
\(\hept{\begin{cases}x\left(2\sqrt{y-1}-x\right)+y\left(2\sqrt{x-1}-y\right)=0\\x^3+y^3=16\end{cases}.}\)
hept{begin{cases}xleft(x+1right)+yleft(y+1right)6x+y3end{cases}}hept{begin{cases}2x^2-5xy+2y^202x^2-y^27end{cases}}hept{begin{cases}2x^2-y^2-xy+x-y0sqrt{2x+y-2}+2-2x0end{cases}}hept{begin{cases}sqrt{x}+sqrt{x+3}5-sqrt{x^2+3}sqrt{3x+6}+sqrt{x+y-4}5end{cases}}hept{begin{cases}sqrt{x}+2sqrt{x+3}7-sqrt{x^2+3}sqrt{x+y}+sqrt{7-y}y^2-6y+13end{cases}}hept{begin{cases}2x^3-15y-5xx^3+y^31end{cases}}
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\(\hept{\begin{cases}x\left(x+1\right)+y\left(y+1\right)=6\\x+y=3\end{cases}}\)\(\hept{\begin{cases}2x^2-5xy+2y^2=0\\2x^2-y^2=7\end{cases}}\)\(\hept{\begin{cases}2x^2-y^2-xy+x-y=0\\\sqrt{2x+y-2}+2-2x=0\end{cases}}\)\(\hept{\begin{cases}\sqrt{x}+\sqrt{x+3}=5-\sqrt{x^2+3}\\\sqrt{3x+6}+\sqrt{x+y-4}=5\end{cases}}\)\(\hept{\begin{cases}\sqrt{x}+2\sqrt{x+3}=7-\sqrt{x^2+3}\\\sqrt{x+y}+\sqrt{7-y}=y^2-6y+13\end{cases}}\)\(\hept{\begin{cases}2x^3-1=5y-5x\\x^3+y^3=1\end{cases}}\)
Giải hệ phương trinh:
\(1,\hept{\begin{cases}x\left(x-y\right)=6-x-2y\\\left(x+2\right)\sqrt{y^2+4}=y\sqrt{x^2+4y+8}\end{cases}}\)
\(2,\hept{\begin{cases}x^2-xy+y^2=3\\2x^3-9y^3=\left(x-y\right)\left(2xy+3\right)\end{cases}}\)
\(3,\hept{\begin{cases}\sqrt{x}\left(1+\frac{8}{x+y}\right)=3\sqrt{3}\\\sqrt{y}\left(1-\frac{8}{x+y}\right)=-1\end{cases}}\)
14 tháng 2 2020 lúc 11:29
Giải hệ: \(\hept{\begin{cases}x\left(2\sqrt{y-1}-x\right)+y\left(2\sqrt{x-1}-y\right)=0\\x^3+y^3=16\end{cases}}\)
Giải hệ phương trình:1.hept{begin{cases}x^2+y^2+xy1x^3+y^3x+3yend{cases}}2.hept{begin{cases}x+ysqrt{4z-1}y+zsqrt{4x-1}z+xsqrt{4y-1}end{cases}}3.hept{begin{cases}left(x+yright)left(x^2-y^2right)45left(x-yright)left(x^2+y^2right)85end{cases}}4.hept{begin{cases}x^3+2y^2-4y+30x^2+x^2y^2-2y0end{cases}}5. hept{begin{cases}2x^3+3x^2y5y^3+6xy^27end{cases}}
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Giải hệ phương trình:
1.\(\hept{\begin{cases}x^2+y^2+xy=1\\x^3+y^3=x+3y\end{cases}}\)
2.\(\hept{\begin{cases}x+y=\sqrt{4z-1}\\y+z=\sqrt{4x-1}\\z+x=\sqrt{4y-1}\end{cases}}\)
3.\(\hept{\begin{cases}\left(x+y\right)\left(x^2-y^2\right)=45\\\left(x-y\right)\left(x^2+y^2\right)=85\end{cases}}\)
4.\(\hept{\begin{cases}x^3+2y^2-4y+3=0\\x^2+x^2y^2-2y=0\end{cases}}\)
5. \(\hept{\begin{cases}2x^3+3x^2y=5\\y^3+6xy^2=7\end{cases}}\)
GIẢI hpt:
\(a,\hept{\begin{cases}\frac{1}{\sqrt{x}}+\sqrt{2.\frac{1}{y}}=2\\\frac{1}{\sqrt{y}}+\sqrt{2.\frac{1}{x}}=2\end{cases}}\)
\(b,\hept{\begin{cases}x+y+2=4\\2xy-x^2=16\end{cases}}\)
\(c,\hept{\begin{cases}x\left(x-1\right)\left(x-2y\right)=0\\\frac{1}{x}-\frac{1}{y}=\frac{4}{3}\end{cases}}\)
\(\hept{\begin{cases}x\left(2\sqrt{y-1}-x\right)+y\left(2\sqrt{x-1}-y\right)=0\\x^3+y^3=16\end{cases}}\)
giai he pt