填空题
.
The integer c is even, and the integer d is odd. For each of the following integers, indicate whether the integer is even or odd.
填空题
41.
c+2d
填空题
42.
2c+d
填空题
43.
cd
填空题
44.
c
d
填空题
45.
(c+d)
2
填空题
46.
c
2
-d
2
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