问题
解答题
计算: (1)(-
(2)5a2b-(-2ab3)+3ab-(4a2b3) |
答案
(1)原式=-3+1-[2×(-
)]2011×21 2
=-3+1+2
=0;
(2)原式=-10a3b4+12a3b4
=2a3b4.
计算: (1)(-
(2)5a2b-(-2ab3)+3ab-(4a2b3) |
(1)原式=-3+1-[2×(-
)]2011×21 2
=-3+1+2
=0;
(2)原式=-10a3b4+12a3b4
=2a3b4.