设a>b>0,a²+b²-6ab=0,则a+b/b-a的值等于?
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/29 06:38:54
![设a>b>0,a²+b²-6ab=0,则a+b/b-a的值等于?](/uploads/image/z/940530-66-0.jpg?t=%E8%AE%BEa%EF%BC%9Eb%EF%BC%9E0%2Ca%26%23178%3B%2Bb%26%23178%3B-6ab%3D0%2C%E5%88%99a%2Bb%2Fb-a%E7%9A%84%E5%80%BC%E7%AD%89%E4%BA%8E%3F)
xOA
0 %ԭ`Z߲ )ŻċG=#/b=8\ek뷸Qo+oɒ$鬘fnCGHUa;5{d!ȱ KC&Kx4[F+]uCyIRj(r;j
设a>b>0,a²+b²-6ab=0,则a+b/b-a的值等于?
设a>b>0,a²+b²-6ab=0,则a+b/b-a的值等于?
设a>b>0,a²+b²-6ab=0,则a+b/b-a的值等于?
a²+b²-6ab=0
2a²-4ab+2b²=a²+b²+2ab
2 (a-b)²=(a+b)²
因为a>b>0
所以a+b/b-a=-√2
a²+b²-6ab=0
(a+3b)(a-2b)=0
a=-3b
a=2b
因为:a>b>0
所以a=2b
a+b/b-a=2b+b/b-2b=3b/-b=-3