Simplify radicals rationalize denominators help please.

[ace799]

My teacher gave us a study guide with the answers but didn't show us how to solve them. Most I understand but I can't figure out how to set these problem up. Much help would be appreciated!


There are 6 problems total
Here is an image on it. Not sure how to write it on the computer
I have been asking a lot of people and am very desperate! I have a final in 2 days.
Thanks in advance!

 

[ace799]

WHAT are you suppose to do? Those are expressions. Simplify them?

AND you're saying your teacher gives out work, then goofs off

Can you do this one: SQRT(8) * SQRT(2) = ?

4

 

[Dale10101]

Not too enlightening is 4

4

An inclination to help someone is directly proportional to the effort they show to help themselves, heck, maybe even exponentially.

Critical first step Simplify Sqrt(8). Can you do this?

Also, 2 days IS a long time, take a shot of "Slow down" and trying looking for examples to study, your final is not likely to have these exact problems to solve so the most important issue is knowing what you are doing.

Perhaps try looking at pages concerning radicals from this list, lots of worked out examples, by dinner time you will probably have many fewer questions:

http://www.purplemathplus.com/search-keyword-results.php

(BTW, considering the interesting ads that show up on your image page I am tempted to ask if you are for real.)

 

[hoosie]

My teacher gave us a study guide with the answers but didn't show us how to solve them. Most I understand but I can't figure out how to set these problem up. Much help would be appreciated!


There are 6 problems total
Here is an image on it. Not sure how to write it on the computer
I have been asking a lot of people and am very desperate! I have a final in 2 days.
Thanks in advance!

QUESTION:
Simplify 3∜(2x⁵) - x∜(32x)

Worked Example:

24∛(3x⁷) - 2x²∛(24x)
= 24∛(3x*x⁶) - 2x²∛(8*3x)
= 24x²∛(3x) - 4x²∛(3x)
= 20x²∛(3x)