fangcheng

来源:学生作业帮助网 编辑:作业帮 时间:2024/03/29 02:41:14
fangcheng
-7x*x-40x-784=0fangcheng

-7x*x-40x-784=0fangcheng-7x*x-40x-784=0fangcheng-7x*x-40x-784=0fangcheng-7x*x-40x-784=07x^2+40x+784=