(x+2y)²-x²-2xy

来源:学生作业帮助网 编辑:六六作业网 时间:2024/07/26 11:49:32
(x+2y)²-x²-2xy(x+2y)²-x²-2xy(x+2y)²-x²-2xy(x+2y)^2-x(x+2y)=(x+2y)(x+2y-x)

(x+2y)²-x²-2xy
(x+2y)²-x²-2xy

(x+2y)²-x²-2xy
(x+2y)^2-x(x+2y)
=(x+2y)(x+2y-x)
=2y(x+2y)