计算:2b²/a+b-b+a; 1/x-3-6/x²-9-x-1/6+2x; x²-1/x²+4x+4÷(x-1)·x+2/x+1;(a-1/b)÷(b-1/a).约分:3m²n³(x²-1)/9mn²(1-x)化简:x÷x/y·1/x.
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/20 15:15:48
![计算:2b²/a+b-b+a; 1/x-3-6/x²-9-x-1/6+2x; x²-1/x²+4x+4÷(x-1)·x+2/x+1;(a-1/b)÷(b-1/a).约分:3m²n³(x²-1)/9mn²(1-x)化简:x÷x/y·1/x.](/uploads/image/z/469441-1-1.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A2b%26%23178%3B%2Fa%2Bb-b%2Ba%EF%BC%9B+1%2Fx-3-6%2Fx%26%23178%3B-9-x-1%2F6%2B2x%3B+x%26%23178%3B-1%2Fx%26%23178%3B%2B4x%2B4%C3%B7%EF%BC%88x-1%EF%BC%89%C2%B7x%2B2%2Fx%2B1%EF%BC%9B%EF%BC%88a-1%2Fb%EF%BC%89%C3%B7%EF%BC%88b-1%2Fa%EF%BC%89.%E7%BA%A6%E5%88%86%EF%BC%9A3m%26%23178%3Bn%26%23179%3B%28x%26%23178%3B-1%29%2F9mn%26%23178%3B%281-x%29%E5%8C%96%E7%AE%80%EF%BC%9Ax%C3%B7x%2Fy%C2%B71%2Fx.)
计算:2b²/a+b-b+a; 1/x-3-6/x²-9-x-1/6+2x; x²-1/x²+4x+4÷(x-1)·x+2/x+1;(a-1/b)÷(b-1/a).约分:3m²n³(x²-1)/9mn²(1-x)化简:x÷x/y·1/x.
计算:2b²/a+b-b+a; 1/x-3-6/x²-9-x-1/6+2x; x²-1/x²+4x+4÷(x-1)·x+2/x+1;
(a-1/b)÷(b-1/a).
约分:3m²n³(x²-1)/9mn²(1-x)
化简:x÷x/y·1/x.
计算:2b²/a+b-b+a; 1/x-3-6/x²-9-x-1/6+2x; x²-1/x²+4x+4÷(x-1)·x+2/x+1;(a-1/b)÷(b-1/a).约分:3m²n³(x²-1)/9mn²(1-x)化简:x÷x/y·1/x.
(a-1/b)÷(b-1/a)=a/b
3m²n³(x²-1)/9mn²(1-x)=-1/3n(x+1)
x÷x/y·1/x=y/x
??你那标题的看不懂呀大仙....还是截图吧....额...好吧,看来我对不起我中学数学老师了