Melody

Good spotting Alan :)

Anon, if you can remember that slope is rise/run then it is easy because only the y values can go up or down!

So the y values MUST be on the top!

Nice answering Mr Omega :)

Welcome to the forum. 

arc tan is the same as inverse tan so use   [2nd] atan

That looks like a lot of work Chris :)

Do you understand all that Brittany - I guess if you don't you will soon say so :)

$$\frac{\sqrt{2}+\sqrt{7}}{\sqrt{8}+\sqrt{7}}\\\\
=\frac{(\sqrt{2}+\sqrt{7})(\sqrt{8}-\sqrt{7})}{(\sqrt{8}+\sqrt{7})(\sqrt{8}-\sqrt{7})}\\\\
=\frac{\sqrt{16}-\sqrt{14}+\sqrt{56}-7}{(8-7)}\\\\
=\frac{4-\sqrt{14}+\sqrt{4*14}-7}{(1)}\\\\
=4-\sqrt{14}+2\sqrt{14}-7\\\\
=-3+\sqrt{14}\\\\
=\sqrt{14}-3\\\\$$

Who knows ....  CPhill knows !!!!!       

I've never had banana pie but it sounds good and it looks delicious :)

Can I have a peice please. :)

3+8=11

3+8=11

A power of a half means square root so

$$25^{1/2}=\sqrt{25}=5$$

lOOK HERE