Автор - pspgon1008

Решите уравнение номер 4.1.43

Ответ

Автор - o1l7eg17
(x^2+6x)^2+2(x+3)^2=81
x^4+12x^3+38x^2+12x+18=81
x^4+12x^3+38x^2+12x-63=0
(x-1)(x+3)^2(x+7)=0
x-1=0hspace*{30}(x+3)^2=0hspace*{30}x+7=0
x=1hspace*{30}x=-3hspace*{30}x=-7

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