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giải hệ pt sau
aleft{{}begin{matrix}4x+y28x+3y5end{matrix}right. bleft{{}begin{matrix}3x_{ }-2y114x-5y3end{matrix}right. cleft{{}begin{matrix}4x+3y135x-3y_{ }-31end{matrix}right. Dleft{{}begin{matrix}7X+5Y193x+5y31end{matrix}right.
eleft{{}begin{matrix}7x-5y33x+10y62end{matrix}right. fleft{{}begin{matrix}2x+5y113x+2y11end{matrix}right. gleft{{}begin{matrix}x+3y4y-x+52x-y3x-...
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giải hệ pt sau
a\(\left\{{}\begin{matrix}4x+y=2\\8x+3y=5\end{matrix}\right.\) b\(\left\{{}\begin{matrix}3x_{ }-2y=11\\4x-5y=3\end{matrix}\right.\) c\(\left\{{}\begin{matrix}4x+3y=13\\5x-3y=_{ }-31\end{matrix}\right.\) D\(\left\{{}\begin{matrix}7X+5Y=19\\3x+5y=31\end{matrix}\right.\)
e\(\left\{{}\begin{matrix}7x-5y=3\\3x+10y=62\end{matrix}\right.\) f\(\left\{{}\begin{matrix}2x+5y=11\\3x+2y=11\end{matrix}\right.\) g\(\left\{{}\begin{matrix}x+3y=4y-x+5\\2x-y=3x-2\left(y+1\right)\end{matrix}\right.\)
MM
22 tháng 12 2019 lúc 22:14
Giải các hệ phương trình sau:
\(a,\left\{{}\begin{matrix}2x+5y=3\\3x-2y=14\end{matrix}\right.\)
\(b,\left\{{}\begin{matrix}2x+3y=5\\4x+6y=10\end{matrix}\right.\)
Giải phương trình bằng phương pháp thế :
1) left{{}begin{matrix}4x+y28x+3y5end{matrix}right.
2) left{{}begin{matrix}x-ym2x+y4end{matrix}right.
3)left{{}begin{matrix}3x+2y6x-y2end{matrix}right.
4) left{{}begin{matrix}2x-3y1-4x+6y2end{matrix}right.
5)left{{}begin{matrix}2x+3y55x-4y1end{matrix}right.
6)left{{}begin{matrix}3x-y7x+2y0end{matrix}right.
7)left{{}begin{matrix}x+4y23x+2y4end{matrix}right.
8)left{{}begin{matrix}-x-y2-2x-3y9end{matrix}right.
9)left{{...
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Giải phương trình bằng phương pháp thế :
1) \(\left\{{}\begin{matrix}4x+y=2\\8x+3y=5\end{matrix}\right.\)
2) \(\left\{{}\begin{matrix}x-y=m\\2x+y=4\end{matrix}\right.\)
3)\(\left\{{}\begin{matrix}3x+2y=6\\x-y=2\end{matrix}\right.\)
4) \(\left\{{}\begin{matrix}2x-3y=1\\-4x+6y=2\end{matrix}\right.\)
5)\(\left\{{}\begin{matrix}2x+3y=5\\5x-4y=1\end{matrix}\right.\)
6)\(\left\{{}\begin{matrix}3x-y=7\\x+2y=0\end{matrix}\right.\)
7)\(\left\{{}\begin{matrix}x+4y=2\\3x+2y=4\end{matrix}\right.\)
8)\(\left\{{}\begin{matrix}-x-y=2\\-2x-3y=9\end{matrix}\right.\)
9)\(\left\{{}\begin{matrix}2x-3y=2\\-4x+6y=2\end{matrix}\right.\)
giúp mình với :((
giải phương trình
a)\(\left\{{}\begin{matrix}3x+2y=1\\3x+6y+2z=1\end{matrix}\right.\)
b)\(\left\{{}\begin{matrix}2x-3y=1\\3x-2y-3z=5\end{matrix}\right.\)
giai hpt
a.\(\left\{{}\begin{matrix}x=y+4\\2x+3=0\end{matrix}\right.\)
b.\(\left\{{}\begin{matrix}2x+y=7\\3y-x=7\end{matrix}\right.\)
c.\(\left\{{}\begin{matrix}5x+y=3\\-x-\dfrac{1}{5}y=\dfrac{-3}{5}\end{matrix}\right.\)
d.\(\left\{{}\begin{matrix}3x-5y=-18\\x-5=2y\end{matrix}\right.\)
Giải các hệ phương trình:
\(a,\left\{{}\begin{matrix}\frac{3x-2y}{5}+\frac{5x-3y}{3}=x+1\\\frac{2x-3y}{3}+\frac{4x-3y}{2}=y+1\end{matrix}\right.\)
\(b,\left\{{}\begin{matrix}\frac{1}{x-3}-\frac{1}{y-1}=0\\3x-2y=7\end{matrix}\right.\)
Giải hệ phương trình sau :
a, \(\left\{{}\begin{matrix}\left(x^2+1\right)\left(y^2+1\right)=10\\\left(x+y\right)\left(xy-1\right)=3\end{matrix}\right.\)
b, \(\left\{{}\begin{matrix}x^3-1=2y\\y^3-1=2x\end{matrix}\right.\)
c, \(\left\{{}\begin{matrix}2x^2+xy=3x\\2y^2+xy=3y\end{matrix}\right.\)
Giải các hệ phương trình:
\(a,\left\{{}\begin{matrix}3x+2y=8\\4x-3y=-12\end{matrix}\right.\)
\(b,\left\{{}\begin{matrix}2x+5=-\left(x-y\right)\\6x+2y=-10\end{matrix}\right.\)
Giải hệ phương trình:
1, left{{}begin{matrix}left(17-3xright)sqrt{5-x}+left(3y-14right)sqrt{4-y}02sqrt{2x+y+5}+3sqrt{3x+2y+11}x^2+6x+13end{matrix}right.
2, left{{}begin{matrix}xleft(x+yright)+sqrt{x+y}sqrt{2y}left(sqrt{2y^3}+1right)x^2y-5x^2+7left(x+yright)-46sqrt[3]{xy-x+1}end{matrix}right.
3, left{{}begin{matrix}sqrt{x}+sqrt[4]{32-x}-y^2+30sqrt[4]{x}+sqrt{32-x}+6y-240end{matrix}right.
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Giải hệ phương trình:
1, \(\left\{{}\begin{matrix}\left(17-3x\right)\sqrt{5-x}+\left(3y-14\right)\sqrt{4-y}=0\\2\sqrt{2x+y+5}+3\sqrt{3x+2y+11}=x^2+6x+13\end{matrix}\right.\)
2, \(\left\{{}\begin{matrix}x\left(x+y\right)+\sqrt{x+y}=\sqrt{2y}\left(\sqrt{2y^3}+1\right)\\x^2y-5x^2+7\left(x+y\right)-4=6\sqrt[3]{xy-x+1}\end{matrix}\right.\)
3, \(\left\{{}\begin{matrix}\sqrt{x}+\sqrt[4]{32-x}-y^2+3=0\\\sqrt[4]{x}+\sqrt{32-x}+6y-24=0\end{matrix}\right.\)