夸号根号二十加根号五夸号除以根号五减根号三分之一乘以根号十五,怎么解

2024-12-02 12:17:48
推荐回答(3个)
回答1:

(√20+√5)/√5-√(1/3)*√15
=(2√5+√5)/√5-(1/√3)*√15
=3-√(15/3)
=3-√5

回答2:

(√20+√5)÷√5-√(1/3)×√15
=(2√5+√5)÷√5-√(1/3)×√15
=3√5÷√5-√(1/3×15)
=3-√5

回答3:

(√20+√5)/√5-√(1/3)*√15=(2√5+√5)/√5-1/√3*√15=3-√(15/3)=3-√5