ta có: ( x+2).(y-3) = 5 = 5.1 = ( -5). (-1)
TH1:
* x+2 = 5 => x = 3 ( TM)
y - 3 = 1 => y= 4 (TM)
* x+2 = 1 => x = - 1 ( TM)
y- 3 = 5 => y = 8 (TM)
TH2:
* x + 2 = -1 => x = -3 ( TM)
y - 3 = - 5 => y = - 2 ( TM)
* x + 2 = -5 => x = - 7 ( TM)
y - 3 = - 1 => y = 2 (TM)
KL: \(\left(x;y\right)\in\left\{\left(3;4\right);\left(-1;8\right);\left(-3;-2\right);\left(-7;2\right)\right\}\)