问题
选择题
(-5)2000+(-5)2001等于( )
A.(-5)2000
B.(-5)2001
C.-5×(-5)2001
D.-4×(-5)2000
答案
(-5)2000+(-5)2001,
=(-5)2000(1-5),
=-4×(-5)2000.
故选D.
(-5)2000+(-5)2001等于( )
A.(-5)2000
B.(-5)2001
C.-5×(-5)2001
D.-4×(-5)2000
(-5)2000+(-5)2001,
=(-5)2000(1-5),
=-4×(-5)2000.
故选D.