√x²+24.5²=√(x+80)²+39²-√80²+(39-24.5)² 三个大根号
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/29 22:49:55
![√x²+24.5²=√(x+80)²+39²-√80²+(39-24.5)² 三个大根号](/uploads/image/z/8558827-43-7.jpg?t=%E2%88%9Ax%26%23178%3B%2B24.5%26%23178%3B%3D%E2%88%9A%28x%2B80%29%26%23178%3B%2B39%26%23178%3B-%E2%88%9A80%26%23178%3B%2B%2839-24.5%29%26%23178%3B+%E4%B8%89%E4%B8%AA%E5%A4%A7%E6%A0%B9%E5%8F%B7)
√x²+24.5²=√(x+80)²+39²-√80²+(39-24.5)² 三个大根号
√x²+24.5²=√(x+80)²+39²-√80²+(39-24.5)² 三个大根号
√x²+24.5²=√(x+80)²+39²-√80²+(39-24.5)² 三个大根号
本题利用数行结合方法
根据方程得如下图形
所以x/24.5=(x+80)/39
解得x=3920/29
A(x,0),B(0,24.5),C(-80,39),因为√x²+24.5²=√(x+80)²+39²-√80²+(39-24.5)² 三个大根号,所以AB=AC-BC,即AB+BC=AC,所以A,B,C三点在一直线上,且x为直线BC:Y=-29/160X+24,5,
Y=0,X=3920/29