√0.09=±0.3,√0.9=0.3,√0.01=0.1,±√0.001=±0.1正确的是

问题描述:

√0.09=±0.3,√0.9=0.3,√0.01=0.1,±√0.001=±0.1正确的是

√0.01=0.1正确