Prove carefully that if the square of an integer is even the

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Prove carefully that if the square of an integer is even then the integer itself is even.(You will need to assume some facts about the integers but you should state clearly what they are and you should make them as simple as possible.)

是证明一个数的平方是偶数那么这个数是偶数
if an integer is 2n then the square of the integer is 4n^2=2(2n^2) 2x2=4
if an integer is 2n+1 then the square of the integer is 4n^2+4n+1=2(2n^2+2n)+1 3x3=9
2n表示偶数 2n+1表示基数

Prove carefully that if the square of an integer is even the 英语翻译A perfect square is an integer that is the square of an If p is an odd integer,which of the following is an even int If“m”is an even integer ,then the following is the sum of th [GRE数学]If -m/19 is an even integer,which of the following mu 英语翻译Is the positive integer n equal to the square of an inte If T is the set of even integers and S is the set of integer 一道gre数学题n is an even integer and a multiple of 3 .The remain If is given that N is an integer.Prove that (a) 3(2N-1)+1 is if "X" is an integer,which of the following will produce an 翻译if an integer is three times as large as the sum of the fi 【GRE数学】If x is an odd integer,for which of the following equ