Question 302107
{{{(sqrt(x) - 2sqrt(y))/(sqrt(y) - 4sqrt(x))}}}
Multiply NUM and DEN by sqrt(y) + 4sqrt(x)
= {{{(sqrt(x) - 2sqrt(y))*(sqrt(y) - 4sqrt(x))/(((sqrt(y) - 4sqrt(x))sqrt(y) - 4sqrt(x)))}}}
= {{{(-4x - 2y + 9sqrt(xy))/(y - 16x)}}}
= {{{(4x + 2y - 9sqrt(xy))/(16x - y)}}}