1.请写出一个根为x= - 1,另一根满足-1
人气:217 ℃ 时间:2019-09-22 05:44:29
解答
1.(X+1)X=0即X^+X=0
2.解方程X1=4 X2=2
因为是三角形所以两边之和要大于第三边,三角形的三边为4,4,2.周长为10
还可能是4,4,4周长为12
还可能是2,2,2周长是6
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