1)√63*√28=√63*28=√1764=42

2)√6:√24=√6/√24=√0.25=0.5

3)√0.5*√0,32=√0.16=0.4

4)√5/7*√63/125=√9/25=3/5=0.6

5)√3 1/5*√0.2=0,8

6)√15/√135=√9=3