I just dont get it. Can someone please help.

Problems are attached

Chester

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- August 1st 2006, 12:00 PMChesterHelp me please
I just dont get it. Can someone please help.

Problems are attached

Chester - August 1st 2006, 12:06 PMQuick
1. therefore then

Find each root: your answer is correct. - August 1st 2006, 12:11 PMQuick
These should be explained to you better, so here I go:

If you have an equation like: than you can use the cross-product rule to say:

Radicals: Just something most people tend to not know,

therefore when you see something like you can say it equals and then use the rule of exponents to say: which simplifies to

for some reason I really don't feel like answer most of your questions now, so I'll let someone else do that. - August 1st 2006, 01:53 PMChesterThanks
Quick,

Thank you very much for the explanation. Any help is very much appreciated.

Chester - August 1st 2006, 02:02 PMChesterQuestion
Would number one be

-9/4

Chester - August 1st 2006, 02:07 PMQuickQuote:

Originally Posted by**Chester**

- August 1st 2006, 03:56 PMQuick
btw. the roots of are

Do you know how to use foil?

now you add:

notice the things in the box cancel out therefore,

voila! - August 1st 2006, 04:08 PMChesterThanks again
I do know how to use FOIL. I have actually figured out a good deal of these sitting here for the last 12 hours.LOL I used the (a+b)(a-b)=(a^2-b^2). = 3^2-28= -19. I am still working on the last problems.

- August 1st 2006, 04:15 PMQuickQuote:

Originally Posted by**Chester**

simplify:

reciprocate:

find the square root of both sides:

extend:

solve:

name the other problems you need help on - August 1st 2006, 05:03 PMQuick
#2 I'm having trouble understanding what the problem is with #2, since than therefore

but I assume you've done a typo somewhere...

#3

multiply both sides by and you'll get:

now think back and you'll remember that (a+b)(a-b)=(a^2-b^2).

simplify:

solve:

get rid of parentheses:

rearrange:

now use the quadratic formula:

substitute:

simplify:

simplify

use the principle square root:

subtract:

divide: - August 1st 2006, 05:37 PMQuick
alright you have the expression

for convenience, let's seperate the fractions:

now simplify and you'll get:

divide and solve: - August 1st 2006, 05:49 PMChesterUnbelievable
This is not a hard one but my book is so bad that I could not even get that out of it. Just multiply across.

Thanks,

Chester - August 1st 2006, 05:59 PMChesterOops
This one should be

Would it be difficult to explain this. Do I just divide and then subtract? - August 1st 2006, 06:04 PMQuickQuote:

Originally Posted by**Chester**

Well, I'll tell you even if this isn't what you're asking...

we have equation so to change this equation the first step would be by multiply both sides by look below:

multiply both sides by :

therefore:

therefore:

so then we get:

so multiply both sides by and you get:

let's test it out:

change it around and you get:

you see? it works! - August 1st 2006, 06:19 PMChesterThanks for the explanation
I am a little confused (not that that’s hard to do at this point.) But the problem is

Not

Do I solve this the same way?