﹣(x-y)²= (½y-1)² (a+b-c)² a²+b²+____=(a-b)²
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 07:25:22
![﹣(x-y)²= (½y-1)² (a+b-c)² a²+b²+____=(a-b)²](/uploads/image/z/5456362-58-2.jpg?t=%EF%B9%A3%28x%EF%BC%8Dy%29%26%23178%3B%3D+%EF%BC%88%26%23189%3By%EF%BC%8D1%EF%BC%89%26%23178%3B+%EF%BC%88a%EF%BC%8Bb%EF%BC%8Dc%EF%BC%89%26%23178%3B+a%26%23178%3B%EF%BC%8Bb%26%23178%3B%EF%BC%8B____%3D%EF%BC%88a%EF%BC%8Db%29%26%23178%3B)
x){sF=jʆֶ
t ֕@a{:! {D
7 jMR>,/pV@6ԭr qJDRla'ptu&`h U%ib^qAb(dB
﹣(x-y)²= (½y-1)² (a+b-c)² a²+b²+____=(a-b)²
﹣(x-y)²= (½y-1)² (a+b-c)² a²+b²+____=(a-b)²
﹣(x-y)²= (½y-1)² (a+b-c)² a²+b²+____=(a-b)²
﹣(x-y)²= -x² +2xy-y²
(½y-1)² =y² /4-y+1
(a+b-c)² =a² +b² +c² +2ab-2ac-2bc
a²+b²+ (-2ab)=(a-b)²