Ответ №1
X=10-y
x^2-y^2=40
x=10-y
(10-y)^2-y^2=40
x=10-y
100-20y+y^2-y^2=40
x=10-y
100-20y=40
x=10-y
-20y=40-100
x=10-y
y=3
x=10-3
y=3
x=7
y=3
Ответ №1
X=10-y
x^2-y^2=40
x=10-y
(10-y)^2-y^2=40
x=10-y
100-20y+y^2-y^2=40
x=10-y
100-20y=40
x=10-y
-20y=40-100
x=10-y
y=3
x=10-3
y=3
x=7
y=3
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