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vika200103
@vika200103
July 2022
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Помогите пожалуйста решить систему уравнений : x^2+y^2=20 и xy=8 ( Заранее спасибо )
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mrcamvel900
(х+y)^2-2xy=20
xy=8
(x+y)^2=20+16=36
x+y=6
xy=8
x=4 y=2
x=2 y=4
x+y=-6
xy=8
x=-4 y=-2
x=-2 y=-4
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Answers & Comments
xy=8
(x+y)^2=20+16=36
x+y=6
xy=8
x=4 y=2
x=2 y=4
x+y=-6
xy=8
x=-4 y=-2
x=-2 y=-4