化简下列分式(要过程):1 x²+x÷x²-1 2.x²-9÷x²-6x+9 3.x²+4x÷x²+8x+16 4.ab²(a-b)÷a²b-ab² 5.x²-8x+16÷x²-16 6.x²-2x÷2y-xy
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 19:48:09
![化简下列分式(要过程):1 x²+x÷x²-1 2.x²-9÷x²-6x+9 3.x²+4x÷x²+8x+16 4.ab²(a-b)÷a²b-ab² 5.x²-8x+16÷x²-16 6.x²-2x÷2y-xy](/uploads/image/z/2983268-20-8.jpg?t=%E5%8C%96%E7%AE%80%E4%B8%8B%E5%88%97%E5%88%86%E5%BC%8F%EF%BC%88%E8%A6%81%E8%BF%87%E7%A8%8B%EF%BC%89%EF%BC%9A1+x%26sup2%3B%2Bx%C3%B7x%26sup2%3B-1+2.x%26sup2%3B-9%C3%B7x%26sup2%3B-6x%2B9+3.x%26sup2%3B%2B4x%C3%B7x%26sup2%3B%2B8x%2B16+4.ab%26sup2%3B%EF%BC%88a-b%EF%BC%89%C3%B7a%26sup2%3Bb-ab%26sup2%3B+5.x%26sup2%3B-8x%2B16%C3%B7x%26sup2%3B-16+6.x%26sup2%3B-2x%C3%B72y-xy)
化简下列分式(要过程):1 x²+x÷x²-1 2.x²-9÷x²-6x+9 3.x²+4x÷x²+8x+16 4.ab²(a-b)÷a²b-ab² 5.x²-8x+16÷x²-16 6.x²-2x÷2y-xy
化简下列分式(要过程):
1 x²+x÷x²-1 2.x²-9÷x²-6x+9 3.x²+4x÷x²+8x+16 4.ab²(a-b)÷a²b-ab²
5.x²-8x+16÷x²-16 6.x²-2x÷2y-xy
化简下列分式(要过程):1 x²+x÷x²-1 2.x²-9÷x²-6x+9 3.x²+4x÷x²+8x+16 4.ab²(a-b)÷a²b-ab² 5.x²-8x+16÷x²-16 6.x²-2x÷2y-xy
1.(x²+x)/(x²-1)
=x(x+1)/(x+1)(x-1)
=x/x-1
2.(x²-9)/(x²-6x+9)
=(x+3)(x-3)/(x-3)²
=(x+3)/(x-3)
3.(x²+4x)/(x²+8x+16)
=x(x+4)/(x+4)²
=x/(x+4)
4.ab²(a-b)/(a²b-ab²)
=ab²(a-b)/ab(a-b)
=ab²/ab
=b
5.(x²-8x+16)/(x²-16)
=(x-4)²/(x+4)(x-4)
=(x-4)/(x+4)
6. (x²-2x)/(2y-xy)
=x(x-2)/y(2-x)
=-x(x-2)/y(x-2)
=-x/y