问题
填空题
3a2b(2ab3-4a3b+5a4)=______.
答案
3a2b(2ab3-4a3b+5a4)
=3a2b•2ab3-3a2b•4a3b+3a2b•5a4
=6a3b4-12a5b2+15a6b.
故答案为:6a3b4-12a5b2+15a6b.
3a2b(2ab3-4a3b+5a4)=______.
3a2b(2ab3-4a3b+5a4)
=3a2b•2ab3-3a2b•4a3b+3a2b•5a4
=6a3b4-12a5b2+15a6b.
故答案为:6a3b4-12a5b2+15a6b.