問題詳情:
解方程:=0.(用*法)
【回答】
解:=.
=.·························· 2分
=3.······························ 3分
=7.······························· 4分
∴=,=.······················ 6分
知識點:解一元二次方程
題型:計算題
問題詳情:
解方程:=0.(用*法)
【回答】
解:=.
=.·························· 2分
=3.······························ 3分
=7.······························· 4分
∴=,=.······················ 6分
知識點:解一元二次方程
題型:計算題