解方程:=0.(用*法)
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问题详情:
解方程:=0.(用*法)
【回答】
解:=.
=.·························· 2分
=3.······························ 3分
=7.······························· 4分
∴=,=.······················ 6分
知识点:解一元二次方程
题型:计算题
标签:
解方程
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