2a²(1/2ab+b²)+(3a²-2ab²)(-2a)帮忙计算,求求了
问题描述:
2a²(1/2ab+b²)+(3a²-2ab²)(-2a)帮忙计算,求求了
答
2a²(1/2ab+b²)+(3a²-2ab²)(-2a)
=a³b+2a²b²-6a³+4a³b²
=5a³b+2a²b²-6a³