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> 36的算术平方根是;-27的立方根是.-八年级数学
36的算术平方根是;-27的立方根是.-八年级数学
题目简介
36的算术平方根是;-27的立方根是.-八年级数学
题目详情
36的算术平方根是
;-27的立方根是
.
题型:填空题
难度:偏易
来源:不详
答案
6; -3.
根据算术平方根和立方根的知识点进行解答,若x3=a,则x=
,x2=b(b≥0)则x=±
,算术平方根只能为正,据此得到答案.
解:36的平方根为±6,则6是36的算术平方根,-3的立方是-27,则-27的立方根为-3,
故答案为6、-3.
主要考查立方根和算术平方根的知识点,一个正数有两个平方根,它们互为相反数,正数是它的算术平方根;0的平方根是0;负数没有平方根.立方根的性质:一个正数的立方根式正数,一个负数的立方根是负数,0的立方根式0.
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题目简介
36的算术平方根是;-27的立方根是.-八年级数学
题目详情
答案
解:36的平方根为±6,则6是36的算术平方根,-3的立方是-27,则-27的立方根为-3,
故答案为6、-3.
主要考查立方根和算术平方根的知识点,一个正数有两个平方根,它们互为相反数,正数是它的算术平方根;0的平方根是0;负数没有平方根.立方根的性质:一个正数的立方根式正数,一个负数的立方根是负数,0的立方根式0.