Question

$y = \sqrt{x - 4} - 5 \sqrt{4x - {x}^{3} }$


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Answer 1

$y = \sqrt{x - 4} - 5 \sqrt{4x - {x}^{3} } \\ 0 = \sqrt{x - 4} - 5 \sqrt{4x - {x}^{3} } \\ \sqrt{x - 4} = 5 \sqrt{4x - {x}^{3} } \\ x - 4 = 25(4x - {x}^{3} ) \\ 25 {x}^{3} - 99x - 4 = 0$

дальше не знаю