alleryWhy are the integers not closed under exponentiation?
AZero cannot be raised to a power
BA negative exponent can give a fraction
CThe answer is always negative
DPowers are always natural numbers
Answer & Solution
Correct answer: B. A negative exponent can give a fraction
1. Closed would mean a power of an integer stays an integer.
2. A negative exponent gives a fraction, for example 2 to the power -1 is 1/2.
3. The other statements are not true.
_Source: Wikipedia, Integer, Algebraic properties_
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