giai giup minh bai nay voi(minh dang can gap)

T

tuananh8

a)Thuc hien phep tinh
A=(2^9+2^7+1)(2^23-2^21+2^19-2^17+2^14-2^10+2^9-2^7+1)
b) So 2^32+1 co la so nguyen to ko?vi sao?

a) A=[TEX]2^{32}+1[/TEX]
b)Số [TEX]2^{32}+1[/TEX] không là số nguyên tố vì nó bằng [TEX](2^9+2^7+1)(2^{23}-2^{21}+2^{19}-2^{17}+2^{14}-2^{10}+2^9-2^7+1)[/TEX]:)):))=))=))
 
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