Chương III - Hệ hai phương trình bậc nhất hai ẩn
Các câu hỏi tương tự
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 phương trình:
1. \(\left\{{}\begin{matrix}5x-2y=-9\\4x+3y=2\end{matrix}\right.\)
2. \(\left\{{}\begin{matrix}2x+y-4=0\\x+2y-5=0\end{matrix}\right.\)
3. \(\left\{{}\begin{matrix}2x+3y-7=0\\x+2y-4=0\end{matrix}\right.\)
4. \(\left\{{}\begin{matrix}5x+6y=17\\9x-y=7\end{matrix}\right.\)
giải hệ phương trình :
\(\left\{{}\begin{matrix}\left(\sqrt{2}-1\right)x-y=\sqrt{2}\\x+\left(\sqrt{2}+1\right)y=1\end{matrix}\right.\)
giải hệ pt bằng phương pháp thế:1) left{{}begin{matrix}x+y3x+2y5end{matrix}right.2) left{{}begin{matrix}x-y3y2x+1end{matrix}right.3) left{{}begin{matrix}2x+3y4y-x-2end{matrix}right.4) left{{}begin{matrix}xy+2x3y+8end{matrix}right.5) left{{}begin{matrix}2x-y13x-4y2end{matrix}right.giúp mk vs ạ mai mk hc rồi
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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 \(\left\{{}\begin{matrix}x^2+xy^2-xy-y^3=0\\2\left(x^2+1\right)-3\sqrt{x}\left(y+1\right)-y=0\end{matrix}\right.\)
Giải hệ phương trình :
a, left{{}begin{matrix}left(x+y-2right)left(2x-yright)0x^2+y^22end{matrix}right.
b, left{{}begin{matrix}x^2+y^2+2x+2y6x+y-3xy+10end{matrix}right.
c,left{{}begin{matrix}x^2+4x5yy^2+4y5xend{matrix}right.
d,left{{}begin{matrix}x^2+2y^2+xy42x^2+xy+3y^26end{matrix}right.
e,left{{}begin{matrix}4x^2+8x5yy^2+4y10xend{matrix}right.
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Giải hệ phương trình :
a, \(\left\{{}\begin{matrix}\left(x+y-2\right)\left(2x-y\right)=0\\x^2+y^2=2\end{matrix}\right.\)
b, \(\left\{{}\begin{matrix}x^2+y^2+2x+2y=6\\x+y-3xy+1=0\end{matrix}\right.\)
c,\(\left\{{}\begin{matrix}x^2+4x=5y\\y^2+4y=5x\end{matrix}\right.\)
d,\(\left\{{}\begin{matrix}x^2+2y^2+xy=4\\2x^2+xy+3y^2=6\end{matrix}\right.\)
e,\(\left\{{}\begin{matrix}4x^2+8x=5y\\y^2+4y=10x\end{matrix}\right.\)
Giải hệ phương trình:
a)left{{}begin{matrix}dfrac{3x+2}{x-1}-dfrac{3y-1}{y+2}0dfrac{2}{x-1}+dfrac{3}{y+2}1end{matrix}right.
b)left{{}begin{matrix}dfrac{4x-5}{x+1}+dfrac{2y-3}{y-5}8dfrac{3}{x+1}-dfrac{2}{y-5}-1end{matrix}right.
c)left{{}begin{matrix}dfrac{x+y-2}{x+1}+dfrac{3-x}{y+1}dfrac{5}{4}dfrac{3left(x+y-2right)}{x+1}-dfrac{5-x+2y}{y+1}dfrac{3}{4}end{matrix}right.
d)left{{}begin{matrix}dfrac{x-y+1}{x-3}+dfrac{x+1}{y-3}dfrac{-7}{2}dfrac{2left(x-y+1right)}{x-3}-dfrac{x+y-2}{y-3}-dfrac{9}{2}...
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Giải hệ phương trình:
a)\(\left\{{}\begin{matrix}\dfrac{3x+2}{x-1}-\dfrac{3y-1}{y+2}=0\\\dfrac{2}{x-1}+\dfrac{3}{y+2}=1\end{matrix}\right.\)
b)\(\left\{{}\begin{matrix}\dfrac{4x-5}{x+1}+\dfrac{2y-3}{y-5}=8\\\dfrac{3}{x+1}-\dfrac{2}{y-5}=-1\end{matrix}\right.\)
c)\(\left\{{}\begin{matrix}\dfrac{x+y-2}{x+1}+\dfrac{3-x}{y+1}=\dfrac{5}{4}\\\dfrac{3\left(x+y-2\right)}{x+1}-\dfrac{5-x+2y}{y+1}=\dfrac{3}{4}\end{matrix}\right.\)
d)\(\left\{{}\begin{matrix}\dfrac{x-y+1}{x-3}+\dfrac{x+1}{y-3}=\dfrac{-7}{2}\\\dfrac{2\left(x-y+1\right)}{x-3}-\dfrac{x+y-2}{y-3}=-\dfrac{9}{2}\end{matrix}\right.\)
e)\(\left\{{}\begin{matrix}x^2-y^2+2y=1\\\left(x+y\right)^2-2x-2y=0\end{matrix}\right.\)
f)\(\left\{{}\begin{matrix}4x^2+y^2-4xy=4\\x^2+y^2-2\left(xy+8\right)=0\end{matrix}\right.\)
giải hệ phương trình sau:
\(\left\{{}\begin{matrix}y\left(x+3\right)=1\\y+\dfrac{2}{y}=x+1\end{matrix}\right.\)
Giải hệ phương trình:
1, left{{}begin{matrix}x^2+1+y^2+xyyx+y-2frac{y}{1+x^2}end{matrix}right.
2, left{{}begin{matrix}x^3+8y^3-4xy^212x^4+8y^4-2x-y0end{matrix}right.
3, left{{}begin{matrix}x^2+y^2frac{1}{5}4x^2+3x-frac{57}{25}-yleft(3x+1right)end{matrix}right.
4, left{{}begin{matrix}sqrt{12-y}+sqrt{yleft(12-xright)}12x^3-8x-12sqrt{y-2}end{matrix}right.
5, left{{}begin{matrix}left(1-yright)sqrt{x-y}+x2+left(x-y-1right)sqrt{y}2y^2-3x+6y+12sqrt{x-2y}-sqrt{4x-5y-3}end{matrix}right.
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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, \(\left\{{}\begin{matrix}\left(1-y\right)\sqrt{x-y}+x=2+\left(x-y-1\right)\sqrt{y}\\2y^2-3x+6y+1=2\sqrt{x-2y}-\sqrt{4x-5y-3}\end{matrix}\right.\)