帮忙做几道根式乘除题

来源：百度知道 编辑：UC知道 时间：2024/05/29 17:50:12
/是除号,X是乘号
√18 / √8

4√15 / 2√5

化简:
√4X49 / √2X7
(X是乘号)

√300 / √60
√27 X √50 / √6
计算:
√0.4 X √3.6

要有2-3个步骤
快
谢谢

√18 / √8
=√(18/8)
=√(9/4)
=3/2

4√15 / 2√5
=(4/2)X√(15/5)
=2√3

化简:
√4X49 / √2X7
=√[(4X49)/(2X7)]
=√(2X7)
=√14

√300 / √60
=√(300/60)
=√50
=√(25*2)
=5√2

√27 X √50 / √6
=√(27X50/6)
=√(9X25)
=3X5
=15

计算:
√0.4 X √3.6
=√(0.4X3.6)
=√(4X0.36)
=2X0.6
=1.2

√18 / √8 =√（9/4)=3/2

4√15 / 2√5 =2√3

√4X49 / √2X7 =√(4*49/2*7)=√2*7=√14

√300 / √60 =√(300/60)=√5
√27 X √50 / √6 =√(27*50/6)=√(9*25)=3*5=15

√0.4 X √3.6 =√(0.4*3.6)=√(4*0.36)=2*0.6=1.2

1.√18 / √8
=(3√2)/( 2√2)
=3/2

2.4√15 / 2√5
=2√15 / √5
=2√3

3.√4*49 / √2*7
=14/√14
=√14

4.300 / √60
=300/2√15
=150/√15
=10√15

5.√27 X √50 / √6
=3√3 *5√2/√6
=15√6/√6
=15
计算:
6.√0.4 X √3.6
=(√10/5) *[(3√10)/5]<