Posted by PLEASE HELP on Saturday, October 29, 2011 at 10:13pm.
The slash (/) line represents that the number is a fraction.
divide:
sqrt45 / sqrt81 =
simplify:
7sqrt3 / sqrt5 =
Multiply:
sqrt7/sqrt8 X sqrt24/sqrt49 =
Thanks for the advice regarding how to show square root symbol. Also thank for taking the time to help with these problems. I have a total of 12 to do and I do not know to get started on these 3 at all. Would it be possible for someone to check the other 9 for me too please? Thank you.

MATH MIDDLE SCHOOL  Reiny, Sunday, October 30, 2011 at 12:08am
√45/√81 = 3√5/9
7√3/√5
= 4√3/√5 * √5/√5
= 4√15/5
(√7/√8)(√24/√49)
= √7(√3/7) , because √24/√8 = √3
= √21/7

correction  MATH MIDDLE SCHOOL  Reiny, Sunday, October 30, 2011 at 12:11am
the 2nd one should say ....
7√3/√5
= 7√3/√5 * √5/√5
= 7√15/5
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