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> 若2x-1的平方根是±5,则x=_________-八年级数学
若2x-1的平方根是±5,则x=_________-八年级数学
题目简介
若2x-1的平方根是±5,则x=_________-八年级数学
题目详情
若2x-1的平方根是±5,则x=_________
题型:填空题
难度:偏易
来源:不详
答案
13
本题考查平方根的运算。按照题目的要求可以写成
,将方程两边平方得
,移项解出
,最终解出
,故本题的答案为
。
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题目简介
若2x-1的平方根是±5,则x=_________-八年级数学
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