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JuliaKalikina
@JuliaKalikina
July 2022
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решите уравнение(с решением)
1. 7x в третей степени -28x=0
2. x в третей степени +8xво второй степени +16x=0
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Саня20013101
Х(7х квадр -28)=0
х(7х-28)(7х+28)=0
х=0 или 7х-28=0 или 7х+28=0
7х=28 7х=-28
х=4 х=-4
ответ: 0;4;-4
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Answers & Comments
х(7х-28)(7х+28)=0
х=0 или 7х-28=0 или 7х+28=0
7х=28 7х=-28
х=4 х=-4
ответ: 0;4;-4