Question

$sqrt[4]{y {15} }$
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$sqrt[4]{y^{5} }$

Answer 1

$frac{ sqrt[4]{y^{15}} }{ sqrt[4]{y^5} } = sqrt[4]{y^{10}} = sqrt{y^5}$
y>0

Answer 2

$frac{ sqrt[4]{y^{15}} }{ sqrt[4]{y^{5}} }= sqrt[4]{ frac{y^{15}}{y^{5}} } = sqrt[4]{y^{15-5}} = sqrt[4]{y^{10}} = sqrt[4]{(y^{2})^{4}*y^{2}} =y ^{2} * sqrt[4]{y^{2}} =y ^{2} sqrt{y}$

Answer 3

спасибо огроомное