((x²-5x+6)/(12-7x+x²))²÷((x²+3x+2)/(x²-2x+8))² 其x=-2,求值为多少?"/"是分数线
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 04:30:36
![((x²-5x+6)/(12-7x+x²))²÷((x²+3x+2)/(x²-2x+8))² 其x=-2,求值为多少?](/uploads/image/z/581142-30-2.jpg?t=%28%EF%BC%88x%26%23178%3B-5x%2B6%29%2F%2812-7x%2Bx%26%23178%3B%29%29%26%23178%3B%C3%B7%28%28x%26%23178%3B%2B3x%2B2%29%2F%28x%26%23178%3B-2x%2B8%29%29%26%23178%3B+%E5%85%B6x%3D-2%2C%E6%B1%82%E5%80%BC%E4%B8%BA%E5%A4%9A%E5%B0%91%3F%22%2F%22%E6%98%AF%E5%88%86%E6%95%B0%E7%BA%BF)
((x²-5x+6)/(12-7x+x²))²÷((x²+3x+2)/(x²-2x+8))² 其x=-2,求值为多少?"/"是分数线
((x²-5x+6)/(12-7x+x²))²÷((x²+3x+2)/(x²-2x+8))² 其x=-2,求值为多少?
"/"是分数线
((x²-5x+6)/(12-7x+x²))²÷((x²+3x+2)/(x²-2x+8))² 其x=-2,求值为多少?"/"是分数线
原式化简:{(x-3)(x-2)/(x-3)(x-4)}²÷{(x+1)(x+2)/(x-4)(x+2)}²
{(x-2)/(x-4)}²÷{(x+1)/(x-4)}²
{(x-2)/(x-4)×(x-4)/(x+1)}²
{(x-2)/(x+1)}²
把x=-2代入得16