x+y=6 y = 6 - x y=6-x
x^2+11y=92 x^2 + 11(6 - x) = 92 x^2 + 66 - 11x = 92
x^2 + 66 - 11x = 92
x^2 -11x -26 = 0
дискриминант = 121 + 104 = 225
x1 = (11 - 15) \ 2 = -2
x2 = (11 +15) \ 2= 12.5
х+у=6 х=6-у
х^2+11у=92 (6-у)^2+11у=92
36-2*6*у+у^2-92=0
36-12у+у^2-92=0
y^2-12y-56=0
d=368
x+y=6 y = 6 - x y=6-x
x^2+11y=92 x^2 + 11(6 - x) = 92 x^2 + 66 - 11x = 92
x^2 + 66 - 11x = 92
x^2 -11x -26 = 0
дискриминант = 121 + 104 = 225
x1 = (11 - 15) \ 2 = -2
x2 = (11 +15) \ 2= 12.5
х+у=6 х=6-у
х^2+11у=92 (6-у)^2+11у=92
36-2*6*у+у^2-92=0
36-12у+у^2-92=0
y^2-12y-56=0
d=368