125^(2/3)+(1/2)^(-2)+343^1/3-(1/27)^(-1/3)
问题描述:
125^(2/3)+(1/2)^(-2)+343^1/3-(1/27)^(-1/3)
答
125^(2/3)+(1/2)^(-2)+343^1/3-(1/27)^(-1/3) =(5^3)^(2/3)+4+(7^3)^(1/3)-(3^-3)^(-1/3) =25+4+7-3 =33 用计算器验证过了,没错!如果看不明白我可以用word重新写过!