帮忙做几道根式乘除题``/是除号,X是乘号√18/√84√15/2√5化简:√4X49/√2X7(X是乘号)√300/√60√27X√50/√6计算:√0.4X√3.6要有2-3个步骤快

Question

帮忙做几道根式乘除题``
/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

Answer 1

√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...