Question

why is a number raise to the power zero always given to be equal to one.?

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Answer 1

Answer:

because it comes under the class of zero exponents. The expression with the exponent as 0 is equal to 1 is referred as zero exponent.

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Answer 2

Answer:

Well, it's the only number which can be multiplied by any other number without changing that other number. ... So, the reason that any number to the zero power is one is because any number to the zero power is just the product of no numbers at all, which is the multiplicative identity, 1.