Hi, I am a little confused by a problem on the Manhattan CAT paper If ab ≠ 0, does a = b? (1) x^a= x^b (2) x = x^2 I understand why (2) is NOT sufficient but why cant (1) by itself be sufficient I can solve it like so:- x^a=x^b => x^a/x^b= 1 => x^(a-b)=X^0 thus since the base is a common acros...