I think they are radicals anyway >_> heres some probs from my HW that i didnt get.
Code:
11. *figured it out*

31. *figured out*

41.

Find LCD

9                   3
---    and     ---
8x              2x+4

59.

9         (blank)
---   =    -----
x+3       2(x+3)

and

63.

x                        (blank)
-----             =        -----
x^2+6x+8         (X+4)(X+2)(X+1)
Hopefully those will format correctly..

anyway.

My book does a horrible job of showing how to do these.. -__-.. and purple math doesnt help me much either.

Thanks so much
~Cait

2. Originally Posted by Cait
bump? plz! this shouldnt be that hard!
you are right for 41.

3. ..I know those answers are right i got em out of the book!

What i need is how they GOT those answers lol.

4. 59.

9/(x+3) = 9/(x+3) * (2/2) = 2*9/2(x+3) = 18/2(x+3)

so the blank is 18

notice that we had a fraction where the denominator increased by a factor of 2. to maintain equality, that is, to keep the fraction at the same value it was before, the numerator also had to increase by factor of 2

5. Originally Posted by Cait
..I know those answers are right i got em out of the book!

What i need is how they GOT those answers lol.
o ok, sorry, i thought you came up with that. ok here's how:

6. Here's 63