Question

2х-у=5
х^+6у+2=0 система уравнения

Answer 1

x²+6y=-2
2x-y=5/*6⇒12x-6y=30
x²+12x=28
x²+12x-28=0
x1+x2=-12 U x1+x2=-28
x1=-14⇒y=-28-5=-33
x2=2⇒y=4-5=-1
(-14;-33) U (2;-1)