(0.1*0.1+0.2*0.2+0.3*0.3+0.4*0.4)/(0.1*0.1*0.1+0.2*0.2*0.2+0.3*0.3*0.3+0.4*0.4*0.4)怎么算，要方法？

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分子历粗分母同孝戚乘以1000试着做做
原式巧烂陵=(1*1+2*2+3*3+4*4)*10/[1*1*1+2*2*2+3*3*3+4*4*4]
=(1+4+9+16)*10/(1+8+27+64)
=300/100
=3

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等于3
可以简算

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