Question

calc iii limits problem

Answer 1

I rationalized the denominator and ended up with 0 but apparently this is wrong >_>

Answer 2

\(\Huge \frac{x-y+9\sqrt{x}-9\sqrt{y}}{\sqrt{x}-\sqrt{y}}\)
\(\Huge = \sqrt{x}+\sqrt{y}+9\)

Answer 3

you should be able to take it from here

Answer 4

\(\Huge x-y=\sqrt{x^2}-\sqrt{y^2}\)
\(\Huge =(\sqrt{x}-\sqrt{y})(\sqrt{x}+\sqrt{y})\)

Answer 5

ok, thanks, I get it now