Min ATK = Str + [Str / 10] ^ 2 + Dex
Max ATK = Str + [Str / 10] ^ 2 + Max(Str + Level, Dex) <-- this is what you see in the Alt+R window
(** Note: In most cases, Str+Lvl > Dex, so the formula simplifies down to ATK = Level + (STR * 2) + [STR/10]^2 )
about elemental redux is their mdef
MDEF = [Level / 10] + [Int / 5]
about element i have no idea, on theory id say its one attack that ignores the property, but just a wild theory