Simplify:
[MATH](7+\sqrt3)(5-\sqrt3)[/MATH]
So I use FOIL:
[MATH]=35-7\sqrt3+5\sqrt3+3[/MATH]
[MATH]=38-2\sqrt3[/MATH]
I have also tried to fumble through by swapping the + and - to no avail. Something basic and rather important is totally lost on me here.
Message to admins/moderators: This is my second account because I lost my previous email and password. Username was clownshoes I believe. Thank you for all the help you've provided in the past.
[MATH](7+\sqrt3)(5-\sqrt3)[/MATH]
So I use FOIL:
[MATH]=35-7\sqrt3+5\sqrt3+3[/MATH]
[MATH]=38-2\sqrt3[/MATH]
I have also tried to fumble through by swapping the + and - to no avail. Something basic and rather important is totally lost on me here.
Message to admins/moderators: This is my second account because I lost my previous email and password. Username was clownshoes I believe. Thank you for all the help you've provided in the past.