若△ABC的三边a b c满足(a+b)²(a²+b²-c²)=0 判断△ABC
5个回答
(a+b)²(a²+b²-c²)=0
∵a+b≠0
∴a²+b²-c²=0
a²+b²=c²
∴△ABC为直角三角形
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