(1) Transverse observation: any power of a positive number is a () number; the odd power of a negative number is a negative number, and the even power is a positive number; any power of zero is zero. (1) Horizontal observation: Any power of a positive number is a () number; an odd power of a negative number is a negative number, and an even power is a positive number; any power of zero is zero. (2) Longitudinal observation The odd power of two numbers opposite to each other still (), even power () (3) What is the even power of any number? ( )

(1) Transverse observation: any power of a positive number is a () number; the odd power of a negative number is a negative number, and the even power is a positive number; any power of zero is zero. (1) Horizontal observation: Any power of a positive number is a () number; an odd power of a negative number is a negative number, and an even power is a positive number; any power of zero is zero. (2) Longitudinal observation The odd power of two numbers opposite to each other still (), even power () (3) What is the even power of any number? ( )

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Any power of 1 is (), the () power of -1 is -1, the () power of -1 is 1, any power of a positive number is (), and the even power of a negative number is () The odd power of a negative number is ()

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