设多项式3a³-9a²+ka-12有因式a-3用待定系数法因式分解
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 09:47:54
![设多项式3a³-9a²+ka-12有因式a-3用待定系数法因式分解](/uploads/image/z/1790940-12-0.jpg?t=%E8%AE%BE%E5%A4%9A%E9%A1%B9%E5%BC%8F3a%26%23179%3B-9a%26%23178%3B%2Bka-12%E6%9C%89%E5%9B%A0%E5%BC%8Fa-3%E7%94%A8%E5%BE%85%E5%AE%9A%E7%B3%BB%E6%95%B0%E6%B3%95%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3)
设多项式3a³-9a²+ka-12有因式a-3用待定系数法因式分解
设多项式3a³-9a²+ka-12有因式a-3用待定系数法因式分解
设多项式3a³-9a²+ka-12有因式a-3用待定系数法因式分解
3(a-3)(a-b)(a-c)=3a³-9a²+ka-12或
(a-3)(3a-b)(a-c)=3a³-9a²+ka-12或
(a-3)(a-b)(3a-c)=3a³-9a²+ka-12
k=4