4xπ+3x(根号2-根号27)=...还有 3×根号5+2x(根号5-根号3)=

问题描述:

4xπ+3x(根号2-根号27)=...还有 3×根号5+2x(根号5-根号3)=
保留3个有效数字...简便点的有不..

4*π+3*(根号2-根号27)=4*π+3*(根号2-3根号3)=4π+3根号2-9根号3≈4*3.1416+3*1.414-9*1.732=12.5664+4.242-15.588≈1.223*根号5+2*(根号5-根号3)=3根号5+2根号5-2根号3=5根号5-2根号3 ≈5*2.236-2*1.732=11.18-3...