Answer:
we can put this into an equation system:
x+y=-2
xy=-1.25
x= -1.25/y
-1.25/y + y = -2
y+2 = 1.25/y
y²+2y =5/4
y²+2y-5/4=0
solve y:
y= -1+- sqrrt(9/4)
y=-2/2+-3/2
y1=1/2
y2=-5/2
we teat our solution
y1:
x/2 =-1.25
x=-2.5
-2.5 + 0.5 = -2
so x1 = -2.5 and y1=0.5
y2:
-5x2/2 = -1.25
-5x2=-2.5
x2= 2.5/5=5/10=1/2
0.5+-2.5= -2
so
x2= 0.5
y2= -2.5
