Tìm cặp số nguyên x, y sao cho x (y + 2) = -8

* Hướng dẫn giải

$\left(x;y\right)=\left(-8;-1\right),\left(1;-10\right),\left(8;-3\right),\left(-1;6\right),\left(-4;0\right),\left(2;-6\right),\left(4;-4\right),\left(-2;-6\right)$