Question

Упростите ; √(х+5)(у+4)/√-5-х

Answer 1

$frac{ sqrt{(x+5)(y+4)}}{ sqrt{-5-x}} = \ frac{(x+5)(y+4)}{-5-x} = \ frac{(x+5)(y+4)}{-(x+5)}=-(y+4)=-y-4$