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akaganets
@akaganets
July 2022
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С1 ПЛИЗ ( это не конторольная работа)
ОЧЕНЬ НУЖНО
с объяснениями
алгебра 10 класс
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AnonimusPro
Verified answer
(x^2+6x)^2-81+2(x+3)^2=0
(x^2+6x-9)(x^2+6x+9)+2(x+3)^2=0
(x+3)^2*(x^2+6x-9+2)=0
(x+3)^2*(x^2+6x-7)=0
(x+3)^2=0
x1=-3
x^2+6x-7=0
D=64
x2=-6+8/2=1
x3=-14/2=-7
Ответ: x1=-3; x2=1; x3=-7
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Answers & Comments
Verified answer
(x^2+6x)^2-81+2(x+3)^2=0(x^2+6x-9)(x^2+6x+9)+2(x+3)^2=0
(x+3)^2*(x^2+6x-9+2)=0
(x+3)^2*(x^2+6x-7)=0
(x+3)^2=0
x1=-3
x^2+6x-7=0
D=64
x2=-6+8/2=1
x3=-14/2=-7
Ответ: x1=-3; x2=1; x3=-7