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Alina0534
@Alina0534
July 2022
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РЕШИТЕ УРАВНЕНИЕ!!!!!!!
(x^2+6x)^2+2(x+3)^2=81
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Matemat1k1999
Приветствую!
(х²+6х)²+2(х+3)²=81
2(х+3)²+(х²+6х)²=81
х^4+12x³+38x²+12x+18=81
x^4+12x³+38x²+12x-63=0
(x-1)(x+3)²(x+7)=0
x-1=0
x=1
(x+3)²=0
x=-3
x+7=0
x=-7
Ответ:1;-3;-7
0 votes
Thanks 1
KayKosades
Нерационально.
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Answers & Comments
(х²+6х)²+2(х+3)²=81
2(х+3)²+(х²+6х)²=81
х^4+12x³+38x²+12x+18=81
x^4+12x³+38x²+12x-63=0
(x-1)(x+3)²(x+7)=0
x-1=0
x=1
(x+3)²=0
x=-3
x+7=0
x=-7
Ответ:1;-3;-7