记三角形的三条边长为abc,已知a〉b,化简代数式│b-a│+│a-b-c│
人气:188 ℃ 时间:2019-08-19 01:41:15
解答
因为a>b
所以a-b>0
b-a<0
因为三角形两边之和大于第三边
所以b+c>a
a-b-c<0
所以│b-a│+│a-b-c│
=a-b+b+c-a
=c
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