若(5x+0.1)的三次方等于0.008,则x=__________

问题描述:

若(5x+0.1)的三次方等于0.008,则x=__________

0.02


(5x+0.1)³=0.008=0.2³
5x+0.1=0.2
5x=0.1
x=0.02

(5x+0.1)³=0.008
5x+0.1=0.2
5x=0.1
x=0.02

对0.008开三次方得0.2,所以5x+0.1=0.2,x=0.02

(5x+0.1)³=0.008=0.2³
5x+0.1=0.2
5x=0.1
x=0.02

0.0196