一道数学题(a²-ab+2b²)-2(-ab²-a³)
来源:学生学帮网 编辑:学帮网 时间:2024/06/26 06:19:34
一道数学题(a²-ab+2b²)-2(-ab²-a³)
原式=a²+2a²-ab+2ab+2b²
=3a²+ab+2b²
=a2+ab+2b2+2ab2+a3
=
a²+2a²-ab+2ab+2b²
=3a²+ab+2b²
a²-ab+2b²+2ab²+2a³,你是想再怎样办
一道数学题(a²-ab+2b²)-2(-ab²-a³)
原式=a²+2a²-ab+2ab+2b²
=3a²+ab+2b²
=a2+ab+2b2+2ab2+a3
=
a²+2a²-ab+2ab+2b²
=3a²+ab+2b²
a²-ab+2b²+2ab²+2a³,你是想再怎样办