√18除以√8=? √0.4乘以√3.6=? √3分之2乘以√8分之27=? √2除以3√40=? 包过程请高手解答跪求……

问题描述:

√18除以√8=? √0.4乘以√3.6=? √3分之2乘以√8分之27=? √2除以3√40=? 包过程请高手解答
跪求……

√18除以√8=√(18/8)=√(9/4)=3/2
√0.4乘以√3.6=√(0.4*3.6)=√14.4=1.2
√3分之2乘以√8分之27=√(2*27)/(3*8)=√(9/4)=3/2
√2除以3√40=√2/360=√1/180=(√5)/30

√18÷√8= √(18/8) = √(9/4) = 3/2
√0.4×√3.6 = √(0.4×3.6) = √(0.4×0.4×3×3) = 1.2
√3分之2×√8分之27=√(2/3 × 27/8) = √9/4 = 3/2
√2 ÷ 3√40= 1/3 ×√2/40 = 1/3 ×√5/100 = √5 / 30

√18除以√8=√(18/8)=√(9/4)=3/2
√0.4乘以√3.6=√1/9=1/3
√3分之2乘以√8分之27=√(2/3)*(8/27)=√(16/81)=4/9
√2除以3√40=√2/√9*40=√(2/360)=√1/180=1/6√5

直接化简...一起放到根号里乘除
1.5
1.2
1.5
1/(6根号5)

√18除以√8=√(18÷8)=√(9/4)=3/2√0.4乘以√3.6=√(0.4×3.6)=√1.44=√1.2²=1.2√3分之2乘以√8分之27==√(2/3×8/27)=√(16/81)=4/9√2除以3√40=(1/3)√(2÷40)=(1/3)√(1/20)=(1/3)√(5/100)=(1/3)(√5)...