说明等式成立的理由.【(a-b)²+(a+b)²】²-【(a-b)²-(a+b)²】²=4(a-b)²(a+b)²
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/01 04:49:43
![说明等式成立的理由.【(a-b)²+(a+b)²】²-【(a-b)²-(a+b)²】²=4(a-b)²(a+b)²](/uploads/image/z/10400448-48-8.jpg?t=%E8%AF%B4%E6%98%8E%E7%AD%89%E5%BC%8F%E6%88%90%E7%AB%8B%E7%9A%84%E7%90%86%E7%94%B1.%E3%80%90%EF%BC%88a-b%29%26%23178%3B%2B%EF%BC%88a%2Bb%EF%BC%89%26%23178%3B%E3%80%91%26%23178%3B-%E3%80%90%EF%BC%88a-b%29%26%23178%3B-%EF%BC%88a%2Bb%EF%BC%89%26%23178%3B%E3%80%91%26%23178%3B%3D4%EF%BC%88a-b%29%26%23178%3B%EF%BC%88a%2Bb%EF%BC%89%26%23178%3B)
说明等式成立的理由.【(a-b)²+(a+b)²】²-【(a-b)²-(a+b)²】²=4(a-b)²(a+b)²
说明等式成立的理由.
【(a-b)²+(a+b)²】²-【(a-b)²-(a+b)²】²=4(a-b)²(a+b)²
说明等式成立的理由.【(a-b)²+(a+b)²】²-【(a-b)²-(a+b)²】²=4(a-b)²(a+b)²
首先,你要知道一个公式
m²-n²=(m+n)(m-n)
题目就是,只不过m=(a-b)²+(a+b)²
n=(a-b)²-(a+b)²
再来,(m+n)²=m²+2mn+n²
(m-n)²=m²-2mn+n²
你按公式化简,就是等号右边的式子了.
希望帮到你,望采纳,谢谢.