a^b means multiplying a by itself b times (when b is a positive integer).a^0 = 1 (for a ≠ 0).a^-b = 1 / a^b (for a ≠ 0).a^(1/n) = n-th root of a. Example: 9^0.5 = 3.a^m · a^n = a^(m+n), (a^m)^n = a^(mn), (ab)^n = a^n b^n.a<sup>b</sup> to show a with a superscript b.Choose which optional categories you allow. Necessary cookies are always on. Privacy Policy.