(3a-1/3b)²+(b+2a)(b-2a)
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/03 06:05:46
x)0N57NzSMZ$mDM$]DMR>1l6(UDjZ&BBIچIPPZ*Qm F 1F RL
(3a-1/3b)²+(b+2a)(b-2a)
(3a-1/3b)²+(b+2a)(b-2a)
(3a-1/3b)²+(b+2a)(b-2a)
(3a-1/3b)²+(b+2a)(b-2a),
=9a²-2ab+1/9b²+b²-4a²
=5a²-2ab+10/9b²