\(-\int^{2\left(x+y\right)+\sqrt{x+1}=4}_{2\left(x+y\right)-6\sqrt{x+1}=-10}\Leftrightarrow\int^{7\sqrt{x+1}=14}_{x+y-3\sqrt{x+1}=-5}\Leftrightarrow\int^{\sqrt{x+1}=2}_{x+y-6=-5}\Leftrightarrow\int^{x=3}_{y=-2}\) => vậy..
giai he phuong trinh
x+2\x+1\y=4
1\x^2+1\xy+x\y=3
giai he phuong trinh x/x-1 + 2y/y+2 = 3 va 2x/x-1 - y/y+2 = -4
Giai he phuong trinh: \(\hept{\begin{cases}\frac{2}{x}+\frac{5}{x+y}=2\\\frac{3}{x}+\frac{1}{x+y}=1,7\end{cases}}\)
/x+y/ +/y-2/=2
/x-1/+y =3
giai he phuong trinh
giai he phuong trinh sau :
x^3 - x^2 y^2 - y^3 + 1 = 0 va x^3 + xy - 2 = 0
giai he phuong trinh sau voi x , y la nghiem
(5m+1)x+(3m+2)y=15
(13m-14)x-(2m-5)y=9
tim gia tri cua m sao cho x+y=3
GIAI HE PHUONG TRINH BANG CACH ÂN PHU
\(\hept{\begin{cases}|X+1|+|Y-1|=5\\|X+1|-4Y+4=0\end{cases}}\)
Giai he phuong trinh bang phuong phap cong va phuong phap the
<=> \(\left\{{}\begin{matrix}4x+3x=-6\\\dfrac{x+3y}{3}-\dfrac{y-2}{5}=1\end{matrix}\right.\)
giai he phuong trinh
\(\hept{\begin{cases}x+y+\frac{1}{x}+\frac{1}{y}=\frac{9}{2}\\xy+\frac{1}{xy}+\frac{x}{y}+\frac{y}{x}=5\end{cases}}\)
