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Ответ дан
Rechnung
y=7x²/x(x+4)

x(x+4)
≠0
x≠0  и  х+4≠0
           х≠-4
х∈(-∞;0)∨(0;4)∨(4;+∞)

Ответ

Ответ дан
direkto22
у=7х²/х(х+4)
Д(у)=х≠0 и х≠-4
Все действит числа кроме 0 и -4

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