## u0860867 2 years ago Urgent help needed pls help

1. u0860867

2. eSpeX

Lay out 4 equations and FOIL them from left to right until you have done them all. $(\sqrt{2}-i)*(\sqrt{2}-i)*(\sqrt{2}-i)*(\sqrt{2}-i)$

3. u0860867

@eSpeX i am not really sure how this works because i just started learning this at school if you could explain me a bit on how to do it i will be realy grateful

4. eSpeX

Start with the first two $(\sqrt{2}-i)*(\sqrt{2}-i)$Using FOIL multiply your terms F - first terms O - outer terms I - inner terms L - last terms Once you have done that you add the next $(\sqrt{2}-i)$ and do it it all over, add your fourth $(\sqrt{2}-i)$and do it again, combine terms and you have your answer.

5. u0860867

thanks @eSpeX