у2=-7х+4
у2-13=11х+5х2

-7x+4-13=11x+5x²5x²+18x+9=0D=324-180=144x1= (-18+12)/10= -3/5x2= (-18-12)/10= -3y²1=-7*-3/5+4=21/5+4=21/5+20/5= 41/5y1=√41/5y1=-√41/5y²2=-7*-3+4=25y2=5y2=-5Ответ: (-3/5; √41/5); (-3/5; -√41/5); (-3; 5); (-3; -5)