Question

$y-x / y^{1/2} - x^{1/2} + y^{1/2} - y /y^{1/2}$
При x= 64, y = 81

Answer 1

$81- frac{64}{9}-8+9- frac{81}{9}=73-7 frac{1}{9}=65 frac{8}{9}$