Question

(x-3)X(y+2)=12 calculati x si y apatinand Z

Answer 1

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Answer 2

(x-3)*(y+2)=12=1*12=2*6=3*4=4*3=6*2=12*1=
                        (-1)*(-12)=(-2)*(-6)=(-3)*(-4)=(-6)*(-2)=(-12)*(-1)


x-3=1...x=4 si y+2=12...y=10
x-3=2...x=5 si y+2=6...y=4
x-3=3...x=6 si y+2=4...y=2
x-3=4...x=7 si y+2=3...y=1
x-3=6...x=9 si y+2=2...y=0
x-3=12...x=14 si y+2=1...y=-1
x-3=-1...x=2 si y+2=-12...y=-14
x-3=-2...x=1 si y+2=-6.....y=-8
x-3=-3...x=0 si y+2=-4...y=-6
x-3=-4...x=-1 si y+2=-3....y=-5
x-3=-6....x=-3 si y+2=-2...y=-4
x-3=-12...x=-9 si y+2=-1...y=-3

(x;y)∈S=
={(4;10);(5;4);(6;2);(7;1);(9;0);(14;-1);(2;-14);(1;-8);(0;-6);(-1;-5);(-3;-4);(-9;-3)}