Math Worksheets

Question: Multiplying and dividing Radical Expressions?

I have to do a worksheet for my Algebra 2 class that I dont understand how to do, there are directions but i get confused very easily. The worksheet is on Multiplying and dividing Radical Expressions: Rationalizing the denominator and Simplifying. Directions say to assume all variables are positive. The worksheet is listed below (Reteaching 7-2), I also have to do a simpler one on Reteaching 7-1, but that one is not viewable. I’m not expecting you to do my homework for me, I’m just asking if someone can help me understand it (my math teacher sucks) or if you know of a website perhaps, that could help me. Every website I find on google is too easy of problems to help me get throught my assignment, considering I suck at math! lol. Thanks in advanced for any help I get.

http://www.pdfone.com/download/0_keyword-reteaching-7-2/reteaching-7-2.pdf

It is only the 8 problems at the bottom.

Answer: different ways for different situations

1 – if the numerator can be divided evenly by the denominator do that first.
SQRT 80/SQRT5
SQRT80/5
SQRT16
4

2- if they are exponents than use your rules
SQRTx^6y^7/SQRTx^7y^2
SQRTx^6y^7/x^7y^2
SQRTy^(7-2)/x^7-6)
SQRTy^5/x
SQRTy^4y/x
y^2SQRTy/x
Now this step is under debate – it looks like your book gets rid of radicals in the denominator
y^2/xSQRTyx

Multiplying Variables