Решите систему: { x^2+y^2=24 9x-9y=18

{ x^2+y^2=24        x^2+y^2=24       x^2+y^2=24     ((18+9y):9)^2+y^2=24

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 9x-9y=18             9x=18+9y           x=(18+9y):9     x=(18+9y):9 

(2+y)^2+y^2=24    4+y^2+y^2=24    4+2y^2=24      2y^2=24-4    2y^2=20

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x=2+y                    x=2+y                  x=2+y             x=2+y           x=2+y

y^2=10      y=√10

              :

x=2+y      x=2+√10