How do you simplify #(sqrty-5)^2#?
Foil and add like terms
I really hope that you know how to foil so I am not going to explain it but once you expand you get
Using the FOIL method, you can multiply the two terms inside the parenthesis together.
F means "first terms."
I means "inner terms."
O means "outer terms."
Finally, L means "last terms."
Add your four results together and simplify to complete the foil.
That is the expanded form.