如果方程ay²+by+c=0有实数根y1、y2,那么方程ay²+by+c=0等于A.(y-y1)(y-y2) B.(y+y1)(y+y2)C.a(y-y1)(y-y2)D.a(y+y1)(y+y2)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 02:53:36
![如果方程ay²+by+c=0有实数根y1、y2,那么方程ay²+by+c=0等于A.(y-y1)(y-y2) B.(y+y1)(y+y2)C.a(y-y1)(y-y2)D.a(y+y1)(y+y2)](/uploads/image/z/13925080-64-0.jpg?t=%E5%A6%82%E6%9E%9C%E6%96%B9%E7%A8%8Bay%26%23178%3B%2Bby%2Bc%3D0%E6%9C%89%E5%AE%9E%E6%95%B0%E6%A0%B9y1%E3%80%81y2%2C%E9%82%A3%E4%B9%88%E6%96%B9%E7%A8%8Bay%26%23178%3B%2Bby%2Bc%3D0%E7%AD%89%E4%BA%8EA.%EF%BC%88y-y1%29%28y-y2%29+B.%28y%2By1%29%28y%2By2%29C.a%EF%BC%88y-y1%29%28y-y2%29D.a%28y%2By1%29%28y%2By2%29)
如果方程ay²+by+c=0有实数根y1、y2,那么方程ay²+by+c=0等于A.(y-y1)(y-y2) B.(y+y1)(y+y2)C.a(y-y1)(y-y2)D.a(y+y1)(y+y2)
如果方程ay²+by+c=0有实数根y1、y2,那么方程ay²+by+c=0等于
A.(y-y1)(y-y2) B.(y+y1)(y+y2)C.a(y-y1)(y-y2)D.a(y+y1)(y+y2)
如果方程ay²+by+c=0有实数根y1、y2,那么方程ay²+by+c=0等于A.(y-y1)(y-y2) B.(y+y1)(y+y2)C.a(y-y1)(y-y2)D.a(y+y1)(y+y2)
C 这个公式很有用,牢记
C