化简分式 (1)x²+x/x²-1 (2)x²-9/x²-6x+9
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 03:34:12
![化简分式 (1)x²+x/x²-1 (2)x²-9/x²-6x+9](/uploads/image/z/1803301-61-1.jpg?t=%E5%8C%96%E7%AE%80%E5%88%86%E5%BC%8F+%EF%BC%881%EF%BC%89x%26sup2%3B%2Bx%2Fx%26sup2%3B-1+%EF%BC%882%EF%BC%89x%26sup2%3B-9%2Fx%26sup2%3B-6x%2B9)
化简分式 (1)x²+x/x²-1 (2)x²-9/x²-6x+9
化简分式 (1)x²+x/x²-1 (2)x²-9/x²-6x+9
化简分式 (1)x²+x/x²-1 (2)x²-9/x²-6x+9
x²+x/x²-1 =x(x+1)/(x+1)(x-1)=x/(x-1)
x²-9/x²-6x+9 =(x+3)(x-3)/(x-3)^2=(x+3)/(x-3)