Giải hệ PT: \(\left\{{}\begin{matrix}x^2+y^2=1\\-x^2+5xy+2y^2=3\end{matrix}\right.\)
Giải các hệ Pt sau:
a,\(\left\{{}\begin{matrix}-0,5x+1,2y=2,7\\x-4,5y=-7,5\end{matrix}\right.\)
b,\(\left\{{}\begin{matrix}5x+3y=19\\2x+9y=31\end{matrix}\right.\)
c,\(\left\{{}\begin{matrix}\frac{3}{4}x+\frac{2}{5}y=2,3\\x-\frac{3}{5}y=0,8\end{matrix}\right.\)
d,\(\left\{{}\begin{matrix}5\left(x+2y\right)-3\left(x-y\right)=99\\x-3y=7x-4y-17\end{matrix}\right.\)
1, \(\left\{{}\begin{matrix}x^3+2y^2-4y+29=0\\x^2+x^2y^2-18y=0\end{matrix}\right.\)
2, \(\left\{{}\begin{matrix}x^3+2y^2-4y+10=0\\x^2+x^2y^2-16y+12=0\end{matrix}\right.\)
3, \(\left\{{}\begin{matrix}x,y>0\\x+y=7\\\dfrac{9}{x}+\dfrac{16}{y}=7\end{matrix}\right.\)
4, \(\left\{{}\begin{matrix}x,y>0\\x+y=4\\\dfrac{4}{x}+\dfrac{9}{y}\le4\end{matrix}\right.\)
5, \(\left\{{}\begin{matrix}x^3+y^2=\dfrac{211}{27}\\x^2+y^2+xy-3x-4y+4=0\end{matrix}\right.\)
6, \(\left\{{}\begin{matrix}x^4+81y^2=697\\x^2+9y^2+3xy-9x-36y+36=0\end{matrix}\right.\)
Giải hệ phương trình
a, \(\left\{{}\begin{matrix}-2x+3y=-11\\-4x+6y=5\end{matrix}\right.\)
b, \(\left\{{}\begin{matrix}x-5y=-4\\-2x+9y=5\end{matrix}\right.\)
c, \(\left\{{}\begin{matrix}-x+3y=2\\2x-5y=1\end{matrix}\right.\)
d, \(\left\{{}\begin{matrix}-2x-y=-3\\3x+2y=6\end{matrix}\right.\)
các bạn ơi giải giúp mình với
Giải hệ phương trình: \(\left\{{}\begin{matrix}3x^2-4y^2+2\left(3x-2y\right)=-11\\x^2-5y^2+2x-5y=-11\end{matrix}\right.\)
Giải các hệ phương trình sau :
a) \(\left\{{}\begin{matrix}4x+y=-5\\3x-2y=-12\end{matrix}\right.\);
b) \(\left\{{}\begin{matrix}x+3y=4y-x+5\\2x-y=3x-2\left(y+1\right)\end{matrix}\right.\);
c) \(\left\{{}\begin{matrix}3\left(x+y\right)+9=2\left(x-y\right)\\2\left(x+y\right)=3\left(x-y\right)-11\end{matrix}\right.\);
d) \(\left\{{}\begin{matrix}2\left(x+3\right)=3\left(y+1\right)+1\\3\left(x-y+1\right)=2\left(x-2\right)+3\end{matrix}\right.\).
giải hệ phương trình
a. \(\left\{{}\begin{matrix}2x=y^2-4y+5\\2y=x^2-4x+5\end{matrix}\right.\)
b. \(\left\{{}\begin{matrix}x=y^3+6\\y=x^3+6\end{matrix}\right.\)
Giải hệ phương trình :
\(\left\{{}\begin{matrix}x^3+7y=\left(x+y\right)^2+x^2y+7x+4\\3x^2+y^2-8y+4=8x\end{matrix}\right.\)
Giải hệ PT: \(\left\{{}\begin{matrix}x+y+z=2\\x^2+y^2+z^2=6\\x^3+y^3+z^3=8\end{matrix}\right.\)