(-2a+1)²-(2a+1)(2a-1)

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/13 05:57:58
(-2a+1)²-(2a+1)(2a-1)

(-2a+1)²-(2a+1)(2a-1)
(-2a+1)²-(2a+1)(2a-1)

(-2a+1)²-(2a+1)(2a-1)
答:
(-2a+1)²-(2a+1)(2a-1)
=4a²-4a+1-(4a²-1)
=-4a+2