x-y=11 x-y=11 x-y=11 x-y=11 x-y=11 1-y-y=11
x²-y²=11 (x-y)*(x+y)=11 11*(x+y)=11 x+y=1 x=1-y x=1-y
-2y=10 y=-5 y=-5
x=1-y x=1-(-5) x=6
ответ -5 и 6
x-y=11 x-y=11 x-y=11 x-y=11 x-y=11 1-y-y=11
x²-y²=11 (x-y)*(x+y)=11 11*(x+y)=11 x+y=1 x=1-y x=1-y
-2y=10 y=-5 y=-5
x=1-y x=1-(-5) x=6
ответ -5 и 6