a，b，c为三角形ABC的三边，且满足a2+b2+c2+338=10a+24b+26c，试判别这个三角形的形状．

题干

a，b，c为三角形ABC的三边，且满足a²+b²+c²+338=10a+24b+26c，试判别这个三角形的形状．

上一题下一题 0.0难度选择题更新时间:2017-05-26 01:32:03

解：由a²+b²+c²+338=10a+24b+26c，

得：（a²﹣10a+25）+（b²﹣24b+144）+（c²﹣26c+169）=0，

即：（a﹣5）²+（b﹣12）²+（c﹣13）²=0，

由非负数的性质可得：

Subject	How can we have a colorful summer vacation?
Place & Time	Class 1 Grade8, at 10:00 am on ____
Ideas from Students
Zhao Pei: I want to make myself stronger, so I'd like to ____more exercise. Liu Yue: I prefer to take a vacation ____ my parents in Hainan. Being together with families is my way to show love to them. Zhang Li: I have made a plan to read some books I like. Reading can help me get lots of knowledge. When I grow ____I want to be a writer. Chen Tao: I'll do more chores. My parents do almost everything for me, but I don't want to depend on them too much. I hope to____after myself.