\(3xy+x+15y-44=0\)
\(\Leftrightarrow x\left(3y+1\right)+5\left(3y+1\right)=49\)
\(\Leftrightarrow\left(3y+1\right)\left(x+5\right)=49\)
Vì x;y là số nguyên
\(\Rightarrow\hept{\begin{cases}3y+1\\x+5\end{cases}\in}Z\)
\(\Rightarrow\hept{\begin{cases}3y+1\\x+5\end{cases}\in}\text{Ư}\left(49\right)=\left\{\pm1;\pm7;\pm49\right\}\)
Tự lập bảng giá trị nhé
tim tat ca cac so nguyen x,y thoa man x^3+x^2+2-2y=xy
tim cac cap so nguyen(x;y) thoa man; x^2+6xy=18 va x-2y=-7/2*y
Tim cac so nguyen duong thoa man: 1/x+1/y=2/3
Tim tat cac cac cap so nguyen x,y thoa man a) x^2+5xy+4y^2
b)xy-2x+3y-1
Tim tat cac cac cap so nguyen x,y thoa man a) x^2+5xy+4y^2
b)xy-2x+3y-1
Tim tat cac cac cap so nguyen x,y thoa man a) x^2+5xy+4y^2
b)xy-2x+3y-1
Tim cac so nguyen x y thoa man\(x^3+3x=x^2y+2y+5\)
cho so nguyen to p va cac so duong x,y thoa man 4x^2-3xy-y^2-p(3x+2y)=2p^2 CHUNG MINH RANG 5x-1 la so chinh phuong
Tim cac so nguyen x,y thoa man: \(x^3+2x^2+3x+2=y^3\)
