计算(-1的立方根)+ (-8的立方根)+(-27的立方根)+…(-2009的立方的立方根)立方根打不出,应该看得懂吧!

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计算(-1的立方根)+ (-8的立方根)+(-27的立方根)+…(-2009的立方的立方根)
立方根打不出,应该看得懂吧!

(-1的立方根)+ (-8的立方根)+(-27的立方根)+…(-2009的立方的立方根)
=-1-2-3-...-2009
=-(1+2009)/2
=-1005

-1+(-2)+(-3)+……+(-19)=-210

=-(1+2+3+……+2009)
=-(1+2009)*2009/2
=-2019045

(-3分之一)的平方÷ {27分之-8的立方根-【15分之2×根号9分之25+(-2分之一)的立方÷20分之3】} =1/9÷{-2/27-[2/15×5/3-1/8×