(Squareroot .2)^-2 is right!!! NICE Gambit!
Square root of .2 squaredvis just .2, but to the NEGATIVE 2 power, it is 1 OVER .2, which is 2
;-)
after a couple of guesses (you didn't say other numbers couldn't be used, i did only use two 2s) i remembered i'd heard it before and although i couldn't remember exactly how it was done i remembered enough to mess around on my calculator to find it...
(Squareroot .2)^-2 is right!!! NICE Gambit!
Square root of .2 squaredvis just .2, but to the NEGATIVE 2 power, it is 1 OVER .2, which is 2