By definition, any number raised to the zero power is "one".
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zero.
five one six minus one six equals five zero zero
50 - 5/1 + 4.5 - 3 =1 - 5 + 4.5 - 3 =-2.5
Zero
x to the n divided by x to the n is 1. By the law of powers x to the power n divided by x to the power n is x to the power (n minus n), ie x to the power zero. Things which are equal to the same thing are equal to each other. Therefore x to the power zero = 1. (Unless x = zero!)