共50条信息
若\(a\),\(b\),\(c\)是\(\triangle ABC\)的三边长,请化简\(|a-b-c|+|b-c-a|+|c-a-b|\).
化简\((\)\(x\)\(―2)^{2}+(\)\(x\)\(+1)(\)\(x\)\(―1)\)
化简:
\((1)3b+5a-\left( 2a-4b \right)\)
\((2)4{{a}^{3}}-\left( 7ab-1 \right)+2\left( 3ab-2{{a}^{3}} \right)\)
进入组卷