问题
选择题
(-2)2009+(-2)2008的值是( )
A.-2
B.22008
C.-22008
D.1
答案
(-2)2009+(-2)2008
=(-2)2008×(-2)+(-2)2008
=(-2)2008×[(-2)+1]
=-22008.
故选C.
(-2)2009+(-2)2008的值是( )
A.-2
B.22008
C.-22008
D.1
(-2)2009+(-2)2008
=(-2)2008×(-2)+(-2)2008
=(-2)2008×[(-2)+1]
=-22008.
故选C.