GRE Math Review 1 Arithmetic

a to the power negative 1 = 1 over a, a to the power negative 2 = 1 over a squared, a to the power negative 3 = 1 over a to the third power, etc. Note that . a, times, a to the power negative 1 = a, times, 1 over a, which is equal to 1. A square root of a nonnegative number n … ................
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