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) \(\hept{\begin{cases}y+xy^2=6x^2\\1+x^2y^2=5x^2\end{cases}}\)

\(1,\hept{\begin{cases}\sqrt{x}+\sqrt{y}=3\\\sqrt{x+5}+\sqrt{y+3}=5\end{cases}}\)

\(2,\hept{\begin{cases}x\left(x+y+1\right)-3=0\\\left(x+y\right)^2-\frac{5}{x^2}+1=0\end{cases}}\)

\(3,\hept{\begin{cases}xy+x+y=x^2+2y^2\\x\sqrt{2y}-y\sqrt{x-1}=2x-2y\end{cases}}\)

\(4,\hept{\begin{cases}xy+x+1=7y\\x^2y^2+xy+1=13y^2\end{cases}}\)

\(5,\hept{\begin{cases}2y\left(x^2-y^2\right)=3x\\x\left(x^2+y^2\right)=10y\end{cases}}\)

1.Giải hệ pt

1.\(\hept{\begin{cases}x^2-xy+y^2=1\\2y^3=x+y\end{cases}}\)                                            2.\(\hept{\begin{cases}\left(x+y\right)\left(x^2+y^2\right)=15\\y+y^4=x\end{cases}}\)

3.\(\hept{\begin{cases}\left(x+y\right)\left(x^2+y^2\right)=2\\\left(x+y\right)\left(x^4+y^4+x^2y^2-2xy\right)=2x^5\end{cases}}\)   4.\(\hept{\begin{cases}x^2+3y^2=1\\\left(x+y\right)^3=x\end{cases}}\)

5.\(\hept{\begin{cases}4x\left(x^2+y^2\right)=15\\\left(x-y\right)^4=2y\end{cases}}\)                                          6.\(\hept{\begin{cases}\left(xy+1\right)\left(x^2y^2+1\right)=15y^3\\y^3+1=xy^4\end{cases}}\)

7.\(\hept{\begin{cases}x^2+y^2+x+y=xy\\2\left(x+y\right)^3=x+y+2\end{cases}}\)                                8.\(\hept{\begin{cases}x^2+y^4=y^2\left(x+1\right)\\2y^4=x+y^2\end{cases}}\)

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 hệ phương trình:

1) \(\hept{\begin{cases}2\left(x+y\right)+3\left(x+y\right)=4\\\left(x+y\right)+2\left(x-y\right)=5\end{cases}}\)

2)\(\hept{\begin{cases}\left(2x-3\right)\left(2y+4\right)=4x\left(y-3\right)+54\\\left(x+1\right)\left(3y-3\right)=3y\left(x+1\right)-12_{ }\end{cases}}\)

3) \(\hept{\begin{cases}\frac{2y-5x}{3}+5=\frac{y+27}{4}-2x\\\frac{x+1}{3}+y=\frac{6y-5x}{7}\end{cases}}\)

4)\(\hept{\begin{cases}\frac{1}{2}\left(x+2\right)\left(y+3\right)-\frac{1}{2}xy=50\\\frac{1}{2}xy-\frac{1}{2}\left(x-2\right)\left(y-2\right)=32\end{cases}}\)

5)\(\hept{\begin{cases}\left(x+20\right)\left(y-1\right)=xy\\\left(x-10\right)\left(y+1\right)=xy\end{cases}}\)

Ai giỏi toán giải giúp mình mấy hệ phương trình

1.\(\hept{\begin{cases}\left|x-1\right|-\left|y-5\right|=1\\y=5+\left|x-1\right|\end{cases}}\)

2.\(\hept{\begin{cases}2x^3+3yx^2=5\\y^3+6xy^2=7\end{cases}}\)

3.\(\hept{\begin{cases}x-1=\left|2y-1\right|\\y-1=\left|2z-1\right|\\z-1=\left|2x-1\right|\end{cases}}\)

4.\(\hept{\begin{cases}x^2+xy+y^2=7\\y^2+yz+z^2=28\\x^2+xz+z^2=7\end{cases}}\)

5.\(\hept{\begin{cases}\left|x-1\right|+y=0\\x+3y-3=0\end{cases}}\)

\(\hept{\begin{cases}x^2+y^2+xy=3\\xy+3x^2=4\end{cases}}\)

giải hệ phương trình bằng phương pháp thế 

\(â,\hept{\begin{cases}3x^2+\left(6-y\right)x^2-2xy=0\\x^2-x+y=-3\end{cases}}\)

\(b,\hept{\begin{cases}x^2+y^2+xy+1=4y\\y\left(x+y\right)^2=2x^2+7y+2\end{cases}}\)

\(c,\hept{\begin{cases}x^4+2x^3y+x^2y^2=2x+9\\x^2+2xy=6x+6\end{cases}}\)

\(d,\hept{\begin{cases}x\sqrt{y+1}=1\\x^2y=y-1\end{cases}}\)

GIẢI CÁC PHƯƠNG TRÌNH:

A)     \(\hept{\begin{cases}x+y=5\\\sqrt{\frac{x}{y+1}}+\sqrt{\frac{y+1}{x}=2}\end{cases}}\)

B)      \(\hept{\begin{cases}x+y+\frac{x}{y}=9\\\left(x+y\right)\frac{x}{y}=20\end{cases}}\)

C)      \(\hept{\begin{cases}\left|x-1\right|+\left|y-2\right|=1\\\left|x-1\right|+3y=3\end{cases}}\)

D)     \(\hept{\begin{cases}x-2y=7\\x^2-y^2+2x+2y+4=0\end{cases}}\)

E)      \(\hept{\begin{cases}xy+x+y=19\\x^2y+xy^2=84\end{cases}}\)

F)       \(\hept{\begin{cases}2x^3=y+1\\2y^3=x+1\end{cases}}\)

G)      \(\hept{\begin{cases}5xy=6\left(x+y\right)\\7yz=12\left(y+z\right)\\3zx=4\left(x+z\right)\end{cases}}\)

H)       \(\hept{\begin{cases}\frac{4x^2}{4+x^2}=y\\\frac{4y^2}{4+y^2}=z\\\frac{4z^2}{4+z^2}=x\end{cases}}\)