a²-2ab+b²+2a²+2ab-b²合并同类项
来源：学生学帮网 编辑：学帮网 时间：2024/06/16 12:48:29
a²-2ab+b²+2a²+2ab-b²合并同类项
a²-2ab+b²+2a²+2ab-b²
=(a²+2a²)+(-2ab+2ab)+(b²-b²)
=3a²
a²-2ab+b²+2a²+2ab-b²=3a²
a²-2ab+b²+2a²+2ab-b²合并同类项
a²-2ab+b²+2a²+2ab-b²
=(a²+2a²)+(-2ab+2ab)+(b²-b²)
=3a²
a²-2ab+b²+2a²+2ab-b²=3a²