x-y=10
xy=144
x=10+y
y(10+y)=144
1oy+y^2=144
y^2+10y-144=0D=100+576=676=26^2
y1=-10+26/2=8
y2=-10-26/2=-18
x1=10+8=18
x2=10-18=-8
x-y=10
xy=144
x=10+y
y(10+y)=144
1oy+y^2=144
y^2+10y-144=0
D=100+576=676=26^2
y1=-10+26/2=8
y2=-10-26/2=-18
x1=10+8=18
x2=10-18=-8