Question

Simpilfy the radical expression by rationalzing the denoiminator?

3/sqrt15

a)sqrt45/15
b)sqrt15/5
c)5sqrt15***
d)sqrt3

Answer 1

3 / sqrt 15 * (sqrt 15/sqrt 15)

= 3 sqrt 15 /15 = sqrt 15 / 5

Hey , just keep your cool and do them step by step.

Answer 2

Thanks! Neede that

Answer 3

multiply by ... √15 / √15

3 √15 / 15

cancel 3

√15 / 5