已知|x-y|=y-x, |x|="3," |y|="4," 则(x+y)3=_ 发布时间:2017-03-31 11:19 │ 来源:www.tikuol.com 题型:填空题 问题: 已知|x-y|=y-x, |x|="3," |y|="4," 则(x+y)3=____▲___;