Question

1.根号15-根号五分之一-根号45

Answer 1

1. 根号15-根号五分之一-根号45

=√15-√1/5-√45

=√15-1/5√5-3√5

=√15-16/5√5

2. 根号8分之根号24*根号3

=(√24*√3)/√8

=(√8*√3*√3)/√8

=3

3. （四分之三倍的根号15-根号12）/2分之根号3

=(3/4√15-√12)/√3÷2

=2(3/4√15-√12)/√3

=(3/2√15-2√12)/√3

=3/2√5-2*2

=3/2√5-4