(2x-y)²-4(x-y)(x+2y)
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/25 23:32:04
(2x-y)²-4(x-y)(x+2y)(2x-y)²-4(x-y)(x+2y)(2x-y)²-4(x-y)(x+2y)您好:(2x-y)²-4(x-y)(x+
(2x-y)²-4(x-y)(x+2y)
(2x-y)²-4(x-y)(x+2y)
(2x-y)²-4(x-y)(x+2y)
您好:
(2x-y)²-4(x-y)(x+2y)
=4x²-4xy+y²-4(x²+xy-2y²)
=4x²-4xy+y²-4x²-4xy+8y²
=9y²-8xy
如果本题有什么不明白可以追问,如果满意记得采纳
如果有其他问题请另发或点击向我求助,答题不易,请谅解,谢谢.
祝学习进步!
满意请采纳.