College Algebra / Alg 031 · Atom · ~20 seconds
The Negative Rule of Exponents
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State
The negative rule of exponents states that a negative exponent means a reciprocal: a⁻ⁿ = 1/aⁿ for nonzero a.
Show
3⁻² equals 1/3², which is 1/9 — a small positive number, not a negative one.
Watch for
The sign moves the power across the fraction bar; it never changes the value's sign.
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