Question

Даю 25 баллов
Сократите дробь: $frac{x-y}{x^ frac{1}{2} - y ^ frac{1}{2} }$

Answer 1

$( x^{1/2} - y^{1/2} )( x^{1/2} +y ^{1/2})/( x^{1/2} -y ^{1/2} )= x^{1/2} +y ^{1/2}$