ab-(2ab-3a2b)的计算结果是( ) A.3a2b+3ab B.-3a2b-ab C.3a2b-ab D.-3a2b+3ab
问题描述:
ab-(2ab-3a2b)的计算结果是( )
A. 3a2b+3ab
B. -3a2b-ab
C. 3a2b-ab
D. -3a2b+3ab
答
ab-(2ab-3a2b)
=ab-2ab+3a2b
=3a2b-ab.
故选C.