Expert Answers
durbanville eNotes educator| Certified Educator

`sqrt(18)/ sqrt(2)`  rationalize the denominator (which will eliminate square root denominator)

= `sqrt(18)/ sqrt(2) times sqrt(2)/sqrt(2)`

= `sqrt(36)/ 2` A square root can be positive or negative therefore

= `6/2`  or `(-6)/2`

=3 or -3

sweetskittles24 | Student

3 or -3

etotheeyepi | Student

This may seem like a small point, but the algebra textbook here in California says that radical symbol without a negative sign refers to the positive root.