$A=\left\{(x,y)\text{/}x,y\in \mathbb{Z},x^2y^2-x^2-8y^2=2x\right\}$
$B=\left\{(x,y)\text{/}x,y\in \mathbb{Z}, x^2+y^2=2007\right\}$
$C=\left\{(x,y)\text{/}x,y\in \mathbb{Z},x^4+y^2+1=y^2\right\}$
$D=\left\{(x,y)\text{/}x,y\in \mathbb{Z},x^3-y^3=2y^2+3y+1\right\}$
$E=\left\{(x,y)\text{/}x,y\in \mathbb{Z},x^3+y^3+z^3=2002\right\}$
$F=\left\{(x,y)\text{/}x,y\in \mathbb{Z},5(x+y+z)=4xyz-24\right\}$
Bài viết đã được chỉnh sửa nội dung bởi tritanngo99: 24-09-2016 - 17:38