x/x方-9-1/x方+6x+91.x/x方-9-1/x方+6x+9 2.1/2+a-1/a方-4 3.1/x+3-6/x方-9-1/3-x 4.a方/a-1-a-1
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/23 15:00:00
![x/x方-9-1/x方+6x+91.x/x方-9-1/x方+6x+9 2.1/2+a-1/a方-4 3.1/x+3-6/x方-9-1/3-x 4.a方/a-1-a-1](/uploads/image/z/6918594-42-4.jpg?t=%26%238203%3Bx%2Fx%E6%96%B9-9-1%2Fx%E6%96%B9%2B6x%2B91.x%2Fx%E6%96%B9-9-1%2Fx%E6%96%B9%2B6x%2B9+2.1%2F2%2Ba-1%2Fa%E6%96%B9-4+3.1%2Fx%2B3-6%2Fx%E6%96%B9-9-1%2F3-x+4.a%E6%96%B9%2Fa-1-a-1)
x/x方-9-1/x方+6x+91.x/x方-9-1/x方+6x+9 2.1/2+a-1/a方-4 3.1/x+3-6/x方-9-1/3-x 4.a方/a-1-a-1
x/x方-9-1/x方+6x+9
1.x/x方-9-1/x方+6x+9
2.1/2+a-1/a方-4
3.1/x+3-6/x方-9-1/3-x
4.a方/a-1-a-1
x/x方-9-1/x方+6x+91.x/x方-9-1/x方+6x+9 2.1/2+a-1/a方-4 3.1/x+3-6/x方-9-1/3-x 4.a方/a-1-a-1
x^2-9=(x^2-6x+9)/2
2(x^2-9)=(x^2-6x+9)
2(x-3)(x+3)-(x^2-6x+9)=0
2(x-3)(x+3)-(x-3)^2=0
(x-3)[2(x+3)-(x-3)]=0
(x-3)(2x+6-x+3)=0
(x-3)(x+9)=0
x=-3或x=-9