一个多项式与多项式6a²-5a+3的和是5a²+2a-1,则这个多项式是?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 12:39:04
![一个多项式与多项式6a²-5a+3的和是5a²+2a-1,则这个多项式是?](/uploads/image/z/1999806-6-6.jpg?t=%E4%B8%80%E4%B8%AA%E5%A4%9A%E9%A1%B9%E5%BC%8F%E4%B8%8E%E5%A4%9A%E9%A1%B9%E5%BC%8F6a%26%23178%3B-5a%2B3%E7%9A%84%E5%92%8C%E6%98%AF5a%26%23178%3B%2B2a-1%2C%E5%88%99%E8%BF%99%E4%B8%AA%E5%A4%9A%E9%A1%B9%E5%BC%8F%E6%98%AF%3F)
一个多项式与多项式6a²-5a+3的和是5a²+2a-1,则这个多项式是?
一个多项式与多项式6a²-5a+3的和是5a²+2a-1,则这个多项式是?
一个多项式与多项式6a²-5a+3的和是5a²+2a-1,则这个多项式是?
该多项式为
5a²+2a-1-(6a²-5a+3)
=5a²+2a-1-6a²+5a-3
=-a²+7a-4
(5a²+2a-1)-(6a²-5a+3)=5a²-6a²+2a+5a+(-1)-3
=-a²+7a-4