Anything to the power of zero is 1
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Because that value has been established by convention. Any number raised to the power of zero equals one. See the related question.
Any number to the power zero equals 1. A possible exception is zero to the power zero. Some people claim it is equal to zero, others say it equals one, consistent with any other value. Still more say that the result of zero to the power zero is an undefined value. With the possible exception of zero, the statement above holds true for any value.
By definition, any number raised to the zero power is "one".
It remains the same as zero
The value of any nonzero number raised to the zero power will equal positive one (1).