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> 先化简,再求值:,其中,则它的值为()。-八年级数学
先化简,再求值:,其中,则它的值为()。-八年级数学
题目简介
先化简,再求值:,其中,则它的值为()。-八年级数学
题目详情
先化简,再求值:
,其中
,则它的值为( )。
题型:填空题
难度:中档
来源:专项题
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已知,则代数式=()-八年级数学
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题目简介
先化简,再求值:,其中,则它的值为()。-八年级数学
题目详情
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