Tolong dijawabb ya secepatnya. Terima kasih

22. x+y=4
xy=-5...x=-5/y
-5/y+y=4
(-5+y)÷y=4
-5+y^2=4y
y^2-4y-5=0
(y+1)(y-5)=0
y1=-1 y2=5
x1=5/-1=-5
x2=5/5=1

23. 2x-y+2=0
xy=4.....x=4/y
2(4/y)-y+2=0
8/y-y+2=0
-y^2+2y+8=0
(-y-2)(y-4)=0
y1=-2
y2=4
x1=4/-2=-2
x2=4/4=1